The Red Fox (Vulpes vulpes) is the most widely distributed and populous dogs in the world, having colonised large parts of Europe, America, Asia and Africa. They also adapt well to human environments such as farms, suburban areas, and even large communities.

Red foxes have elongated bodies and relatively short limbs. The tail, which is longer than half the body length is long, fluffy and reaches the ground when in a standing position. Their pupils are oval and vertically oriented. Nictitating membranes are present, but move only when the eyes are closed. The forepaws have five digits, while the hind feet have only four and lack dewclaws. They are very agile; being capable of jumping over 2 metre high fences and swims well. Vixens have three pairs of teats, though vixens with 7, 9 or 10 pairs are not uncommon. The testes of males are smaller than those of Arctic foxes.

Red foxes are the largest species of the genus Vulpes. However, relative to dimensions, red foxes are much lighter than similarly sized dogs. Their limb bones, for example, weigh 30% less per unit area of bone than expected for similarly sized dogs. They display significant individual, sexual, age and geographical variation in size. On average, adults measure 35–50 cm (14–20 in) high at the shoulder and 49–90 cm (19–35 in) in body length with tails measuring 53–60 cm (21–24 in). The ears measure 7.7-12.5 cm (3–5 in) and the hind feet 12-18.5 cm (5–7 in). They weigh 2.2–10 kg (5-22 lbs), with vixens typically weighing 15-20% less than males. Adult dog-foxes have skulls measuring 129–167 mm, while those of vixens measure 128–159 mm. The forefoot print measures 60 mm in length and 45 mm in width, while the hind foot print measures 55 mm long and 38 mm wide. They trot at a speed of
6–13 km/h, and have a maximum running speed of 50 km/h. They have a stride of 25–35 cm when walking at a normal pace. North American red foxes are generally lightly built, with comparatively long bodies for their mass and have a high degree of sexual dimorphism. British red foxes are heavily built, but short, while continental European red foxes are closer to the general average among red fox populations. The largest red fox on record was a 12 kg (26.5 lbs), four foot long male, killed in Maidstone, Kent in early 2011.

Red foxes are solitary hunters who feed on rodents, rabbits, birds, and other small game—but their diet can be as flexible as their home habitat. Foxes will eat fruit and vegetables, fish, frogs, and even worms. In the UK the red fox feeds mainly on small rodents such as field mice, rabbits and voles but will eat almost anything it finds, often eating carrion or preying on new-born lambs in the spring. If living among humans, foxes will opportunistically dine on garbage and pet food.

Generally breeding of Red fox occurs between December and February. The female produces one litter of about 4-5 cubs once a year in spring. The naked, blind and helpless cubs are born in a den, or under sheds in urban areas. During the first two weeks following the birth, the female remains with the litter. At four weeks of age the cubs start to out of the den; they disperse from the area of birth between 6-12 months, and reach sexual maturity at 10 months of age.

Image Source: National Geographic Society.
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Leave A Comment, Written on June 19th, 2011 , Wild Life Tags:

Keel billed ToucanScientific Name: Ramphastos Sulfuratus
Habitat: Tropical and Subtropical Rainforests
Wing Span: 109cm – 152cm (43in – 60in)
Weight: 2.1kg – 4kg (4.7lbs – 8.8lbs)
Status: Threatened, but not endangered, due to the destruction of its home the rainforest
Diet in the wild: Fruits (primarily berries), some insects, bird eggs, and tree frogs

Physical Description

The keel-billed toucan averages about 25 inches in length. Its body is covered with black plumage with red and white coverts under and on top of its tail. The toucan has green skin around its eyes and lore (the area between the eyes and the bill). The bird has a yellow face and throat and stands on two blue legs. Broad, heavy wings and a short tail force the bird to have a very laborious flight, flapping its wings hard in upward and downward movements.

The most obvious characteristic of the toucan is its beak. A large rainbow colored structure, the beak appears quite heavy and cumbersome, but is actually light because it is composed of the protein keratin. The beak is hollow with thin rods of bone to support it. It houses a feather like tongue which catches the animal’s food and flicks it down its throat.

Keel-Billed ToucanThe keel billed toucan’s bill is one of the most colourful beaks in the bird world, and although it is more a green colour than anything else, the keel billed toucan’s bill can be a mixture of green, red, yellow and orange in colour.

As with other species of toucan, the size of the keel billed toucan’s bill does not affect the balance of the bird itself as it’s bill is made out of a substance called keratin, which is extremely light but still very strong. Keratin is also the substance that makes up human hair and fingernails and can also be found in the teeth of many different animal species.

General Information

The keel-billed toucan is the national bird of Belize. A small, playful bird, the toucan can often be found throwing berries at another bird or jousting with its beak with another toucan. These social practices fit in with the bird’s very family-oriented nature. The toucan travels in flocks of six or more and lives holes in trees with several other toucans. Because the holes are relatively small, the toucans must tuck their tails and beaks under them to conserve room when sleeping.

Keel-Billed ToucanThe toucans form strong bonds when paired off. The mother and father take turns sitting on their 2 to 4 glossy white eggs. The eggs hatch in 16 to 20 days and spend the first 8 to 9 weeks in the nest as their beaks fully form.

The keel billed toucan has a diet that primarily consists of large quantities of different varieties of fruit and berries. However, due to the surprising dexterity of the keel billed toucan’s bill, the keel billed toucan also feasts on bird eggs, insects, lizards, and tree frogs should the keel billed toucan feel peckish and in the absence of fruit.

The keel billed toucan is an extremely sociable bird and is very rarely seen on it’s own. As well as nesting together, the keel billed toucan travels in small flocks which usually contain between 6 and 15 keel billed toucan individuals. Despite what people think though, the keel billed toucan is not very good at flying and does most of its moving about by hopping between the tree branches.

A female keel billed toucan lays between 1 and 5 eggs in a hollow tree, which usually hatch within a few weeks. Both the male and female keel billed toucan incubate the eggs and both keel billed toucan parents also feed and look after their keel billed toucan chicks until they are old enough and strong enough to fend for themselves.

 

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1 Comment, Written on March 18th, 2011 , Wild Life Tags:

The Red Panda, also called the “Fire Cat,” is a tree dwelling mammal, which looks like a raccoon, with its bushy tail and white and black markings across its face. There are two species of Red Panda.

  • One subspecies is found only in China,
  • While the subspecies found in India is also found in parts of Southern China.

The red panda shares its name with the giant panda but, unlike the giant panda, the red panda is not a bear. Scientists believe it is more closely related to raccoons and skunks. The red panda lives in temperate forests from Nepal to southwest China. It feeds on bamboo, is a good climber, and spends most of its life in the trees. Due to poaching and habitat loss, it is now endangered.

Red pandas live in the cool temperate forests of southwestern China, the Himalayas, and Nepal. Forests of ancient trees, called old-growth forests, are very important to the survival of red pandas. They provide dens and hiding places for the small panda cubs and also for adult pandas.

The Red Panda is a rare animal and because of its reclusive arboreal nature and the difficult terrain in which it lives, accurate estimates of the Red Panda population are hard to arrive at. It is estimated that there are about 2,500* Red Pandas left in the wild.

The Red Panda weighs 3-6 Kg and is covered with red fur. It grows to a length of 50-60 cm with a 20-50 cm long tail. It looks like a raccoon, with white tipped ears, white markings on its face, long whiskers and a bushy striped tail. Its paws are equipped for grasping the stems of bamboo plants and twigs of trees. It has a strong jaw to help it chew bamboo and en extended pad on the sole of the forepaw and the first digit of its paw to help it grasp bamboo while eating and in climbing up trees.

Bamboo is the red pandas’ favorite food. Adult red pandas climb down from the treetops to feed in groves of bamboo. They stand on their hind legs and pull the stalks of bamboo over to eat the tender leaves and shoots. Red pandas cannot digest bamboo fiber very well. They have to eat large amounts of bamboo every day to survive. Red pandas also eat grasses, roots, nuts, berries, and lichen. They will even eat insects, birds’ eggs, and chicks.

Each year in June or July, female red pandas give birth to one to four babies. Baby red pandas are called cubs. A cub is born with its eyes closed. After about one week, the cub opens its eyes. It is still very small, weighing only 200g. Cubs are usually born in a hole in an old tree. Mother red pandas line their dens with small sticks and leaves. The dens are high above the ground to keep the cubs safe from predators like the snow leopard.

The loss of habitat as well as human population pressure on wildlife reserves in India is a matter of concern for Red Panda populations in India. The fragmentation of their habitat due to human encroachment, deforestation for agricultural reasons, firewood collection and logging for timber and the effect of domestic livestock species on the bamboo forests has led to the decline of Red Panda populations.

* No one knows exactly how many red pandas are left in the world. This is because they stay hidden among forest trees and are difficult to locate.

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9 Comments, Written on December 23rd, 2010 , Wild Life Tags:

The pangolin also scaly anteater or Tenggiling is a long-tailed, sticky-tongued mammal. Most species feed at night, sleep during the day, and roll into an impenetrable ball when threatened. They are found in tropical regions of Africa and Asia. The name “pangolin” derives from the Malay word pengguling (“something that rolls up” ).

Pangolins have a long tail, short powerful limbs, and a conical head. They are native to the regions of Southeast Asia and are found in parts of Africa. This reptile-like animal with large overlapping scales.

Some pangolins live in trees but most are ground dwellers. Ground dwelling pangolins have strong legs capable of digging into termite mounds for food. The arboreal pangolins have prehensile tails which they use both for balance and as a hook to hang from. Arboreal pangolins roll up in a ball in a tree hollow at night to sleep.
Pangolins vary in size. The Long-Tailed Pangolin is smallest, at about 3 feet (1 meter) long and weighing 3-4 pounds (2 kg). The Giant Pangolin is almost 6 feet (2 meters) long and weighs 70 pounds (32 kg). The Giant Pangolin’s tongue is about 2 feet (61 cm) long, and internally is anchored to the pangolin’s hip bones.

Pangolins are well equipped for self-defense. The pangolin usually rolls up into a ball when threatened. Pangolins can lash out with their razor sharp scales. Pangolins have scent glands similar to those of the skunk which they can use to spray enemies.
Pangolins can amble along on all fours, but for speed they stand up on two feet using their long tail for support. They run at a speed of about 3 miles (5 km) per hour.
Pangolins are endangered because their skin makes attractive leather for boots, similar to snakeskin or armadillo boots. Also, pangolins are eaten in some parts of the world.

Indian Pangolin

The Indian Pangolin (Manis crassicaudata) is a pangolin that is found in many parts of India and some parts of Pakistan and Sri Lanka. Like other pangolins, it has large, overlapping scales on the body which act like armour. It can also curl itself into a ball as self defence against predators such as the tiger. It is an insectivore and feeds on ants and termites, digging them out of their mounds using its long claws that are as long as its forelimbs. It lives mainly in burrows and is known to climb trees. It is also considered to be a curious animal and has been killed for so-called medicinal value.


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1 Comment, Written on December 22nd, 2010 , Wild Life

The shield bugs are among the best known bugs in everybody’s garden. They are named after their shape, which does remind one of the shields, knights used to defend themselves with in medieval times. Scientifically however they are not one family. Usually four families are considered belonging to the shield bugs, because of their shape and the fact that their antennae are comprised of five elements each. First of all we have the True Shieldbugs (Pentatomidae). They can be told apart from the other families by their large scutellum or shield, the triangular shield immediately behind the thorax shield. The Acanthosomatidae is the second family we consider being shield bugs. Having no common English names the members of this family usually are also referred to as shield bugs. Bigger species certainly do look like shield bugs, but many smaller species do not. The Burrowing Bugs, also called Burrower Bugs (Cydnidae) and the Shield-backed Bugs (Scutelleridae) are also part of the shield bugs, but both families are much smaller than the previous ones. Because many members of the Squash Bugs and Leaffooted Bugs (family Coreidae) really do look like the shield bugs.

The Striped Shield bug is easily identified. It is a black bug with five distinct red lines on the pronotum. Or the other way around if you want… On the underside the Striped Shieldbug is red as well, but here it has black spots, not lines. Even though it is closely related to the Green Stinkbug and other foul smelling bugs, the Striped Shieldbug rather smells like apples. The taste however apparently appals all birds. In the Mediterranean there is another black and red species called Graphosoma semipunctatum. It is very similar except that on the pronotum it has 10 black dots, rather than lines. The larvae of the Striped Shieldbug are brownish and less conspicuous. Still it is not difficult to identify them, for a broad light line runs from the nose backwards to the end of the scutellum. The Striped Shieldbug is between 8 and 12mm long.

The eggs are being laid in spring. Larvae can be seen from June to September. In July the first adults may appear. This means that during most of summer and the beginning of autumn the animals may be seen in all stages of life, often in small groups. When the weather is bad as well as during hibernation the adults seek shelter, usually in crevices of trees. Both the larvae and the adults are fond of plants in the Carrot Family (Apiaceae), like the Wild Carrot and Chervils. Even though most of their food is obtained by sucking on plants, the nymphs will occasionally suck on larvae of other insects. The Striped Shield Bug is in hibernation for a rather long period of time: the animals are rarely seen from October to May.

The Striped Shieldbug is a Mediterranean species originally. In the eighties and nineties of the past century it suddenly moved northwards succesfully. Germany and Belgium were reached in the eighties, Holland and Denmark in the nineties. We do not know its current spreading in Britain. We do know though that it has reached the USA recently (New England). It favours dry, sandy soils.

Source: http://www.gardensafari.net

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Leave A Comment, Written on December 20th, 2010 , Wild Life

There once was a time when people thought of the environment, they thought of its beauty; but now as the natural beauty of the earth that once was disappears, many people around the world have awoken to the realities of just how fragile our earth actually is. Central to this issue is pollution, which involves the introduction of harmful substances into the air, land, and water. Although pollution has been occurring throughout the earth’s history, the rate by which the human species have contributed to the amount of pollution that has entered our environment over the past several hundred years far exceeds the earth’s inherent ability to heal itself.

Along with pollution, the mass deforestation of the world’s old growth forests has also posed a growing problem to the health of our environment. The clearance of forests without sufficient reforestation has gradually wore down nature’s natural defence against air pollution, desertification, and soil nutrient loss to the point that we are now facing a future world without trees, which would ultimately mean a world without people.

Experts and advocates of environment-cantered reforms to policies, laws, and harmful corporate and social practices currently make up the global environmental [protection] movement, which seeks to consolidate individual efforts to improve upon the ways human beings interact with the planet.

The global issue of the Environment encompasses many diverse matters of interest some of which will be discussed throughout these Global Issues pages, which include: Animal Rights, Climate Change, Natural Disasters, Sustainable Development, Biodiversity, and Green Spaces.

 Source: www.tigweb.org

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Leave A Comment, Written on September 12th, 2010 , Environment Tags: ,

Southern cassowaries can be found in Northern Australia, New Guinea and surrounding slands.
This species is believed to have undergone a rapid decline in the last three generations (30 years) in Australia, and declines of a similar magnitude may have occurred elsewhere in its range, with local extirpation reported from parts of New Guinea. It is therefore classified as Vulnerable. However, the decline in Australia resulted from an extraordinary rate of habitat destruction which has virtually ceased. Further information from New Guinea may indicate that the species would be better listed as Near Threatened if hunting does not increase in the large areas of existing habitat there.

The diet of the southern cassowary consists mainly of fruit.  The cassowary is valuable to the rainforest because they spread the seeds of large fruit after eating the fruit. After the fruit is initially eaten, the seeds pass through the digestive tract of the cassowary and exit in the dung of the cassowary.  In this respect they have been described as “gardeners of the rainforest”. The cassowary will also consume vegetation, insects and fungi.  

Cassowaries are true rainforest birds.  They are suited to live in the dense foliage of the rainforest and the low, swampy areas of Northern Australia and New Guinea.
Cassowaries are the second heaviest bird on earth second only to the ostrich.  They can weigh up to 130 pounds.  The average height of an adult cassowary is between 4.5 – 6 feet tall.  Both the female and male adult cassowary have the same appearance.  The plumage, or feathers, of the cassowary are black and cover the bird from the neck to the rump.  Like the ostrich, the feathers do not assist the cassowary in flight.  Rather, they offer protection from the elements of the rainforest.  The neck and head are a beautiful, bright blue color.  On the top of the head is a casque, a helmet-like structure that may protect the bird from thorns and branches that could scrape its face.  The feet are equipped with three toes that have sharp claws.  The inner toe has an enlarged claw that is used as protection against potential predators.       

The breeding season occurs between June and November.  During this time the female can mate with one or more male cassowaries.  After mating, the female will build a nest out of foliage in a scrape and will lay between 2 – 5 eggs.  The male will then incubate the eggs and remain with the chicks for many months until they are capable of defending themselves. “Young cassowaries are brown and have buffy stripes. They are often kept as pets in native villages [in New Guinea], where they are permitted to roam like barnyard fowl. Often they are kept until they become nearly grown and someone gets hurt. Mature cassowaries are placed beside native houses in cribs hardly larger than the birds themselves. Garbage and other vegetable food is fed them, and they live for years in such enclosures; for in some areas their plumage is still as valuable as shell money. Caged birds are regularly bereft of their fresh plumes.”

 Threats

A road sign in Cairns, Queensland, Australia. The Southern Cassowary is endangered in Queensland, Australia. Kofron and Chapman (2006) assessed the decline of this species. They found that, of the former cassowary habitat, only 20 – 25% remains. They stated that habitat loss and fragmentation is the primary cause of decline. They then studied 140 cases of cassowary mortality and found that motor vehicle strikes accounted for 55% of them, and dog attacks produced another 18%. Remaining causes of death included hunting (5 cases), entanglement in wire (1 case), the removal of cassowaries that attacked humans (4 cases), and natural causes (18 cases), including tuberculosis (4 cases). 15 cases were for unknown reasons.

Hand feeding of cassowaries poses a big threat to their survival, because it lures them into suburban areas. There, the birds are more susceptible to vehicles and dogs.  Contact with humans encourages Cassowaries to take food from picnic tables.

Feral pigs are a huge problem. They destroy nests and eggs but their worst effect is as competitors for food, which could be catastrophic for the Cassowaries during lean times.

Source: http://www.rainforestanimals.net, http://en.wikipedia.org

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Leave A Comment, Written on September 10th, 2010 , Wild Life Tags: ,

Scorpions have long been of interest to humans primarily because of their ability to give painful and sometimes life threatening stings. Scorpions are also an important and beneficial component of many ecosystems and they are one of the oldest known terrestrial arthropods. Fossil scorpions found in Paleozoic strata 430 million years old appear very similar to present day species.
Scorpions are venomous arthropods in the class Arachnida, relatives of spiders, mites, ticks, solpugids, pseudoscorpions and others. There are currently 1400 recognized species of scorpions worldwide. Scorpions have an elongated body and a segmented tail that is tipped with a venomous stinger. They have four pairs of legs and pedipalps with plier-like pincers on the end, which are used for grasping.
Scorpions are commonly thought of as desert animals, but in fact, they occur in many other habitats, including grasslands and savannahs, deciduous forests, montane pine forests, intertidal zones, rain forest and caves. Scorpions have even been found under snow-covered rocks at elevations of over 12,000 feet in the Himalayas of Asia.
As arachnids, scorpions have mouthparts called chelicerae, a pair of pedipalps, and four pairs of legs. The pincer-like pedipalps are used primarily for prey capture and defense, but are also covered with various types of sensory hairs. The body is divided into two main regions, a cephalothorax and an abdomen. The cephalothorax is covered above by a carapace (or head shield) that usually bears a pair of median eyes and 2 to 5 pairs of lateral eyes at its front corners (a few cave and litter-dwelling scorpions are completely eyeless).
The abdomen consists of 12 distinct segments, with the last five forming the metasoma what most people refer to as the “tail”. At the end of the abdomen is the telson, which is a bulb-shaped structure containing the venom glands and a sharp, curved stinger to deliver venom.
On its underside, the scorpion bears a pair of unique comb-like sense organs called the pectines; these are usually larger and bear more teeth in the male and are used to sense the texture and vibration of surfaces. They also serve as chemoreceptors (chemical sensors) to detect pheromones (communication chemicals).
The “long-tailed” African Scorpion (Hadogenes troglodytes) reaches a length of over 8 inches, and is probably the longest scorpion in the world. Some of the African and Asian Emperor Scorpions routinely reach (and probably exceed) 7 inches. The largest scorpions in the United States are members of the genus Hadrurus (giant desert hairy scorpions), obtaining a length of about 5 inches. Giant desert hairy scorpions also occur in Arizona.
In the USA the bark scorpion is found in southeastern California, Arizona, Nevada, southern Utah, and southwestern New Mexico. It is also found throughout the Baja Peninsula and western Sonora in Mexico. The typical “bark” or “crevice” scorpion is encountered in a variety of situations. It is most commonly found under rocks, logs, tree bark, and other surface objects. The bark scorpion (1-3 inches in length) is the most commonly encountered house scorpion. They are common throughout many habitats but almost always in rocky areas.
Most scorpion species are solitary in nature. The exception to this is bark scorpions, which may over-winter in aggregates of 20-30. The bark scorpion is also one of relatively few species that are able climbers.
The venom of the bark scorpion may produce severe pain (but rarely swelling) at the site of the sting, numbness, frothing at the mouth, difficulties in breathing (including respiratory paralysis), muscle twitching, and convulsions. Death is rare, especially in more recent times. Antivenin is available for severe cases. Certain people, however, may be allergic to the venom and can experience life-threatening side effects when stung (as occurs with bee stings). No cases of anaphylaxis have been reported in Arizona. Additional information can be found in Venomous Animals of Arizona by Bob Smith.
Source: http://en.wikipedia.org/,  http://cals.arizona.edu/pubs/insects/az1223

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Leave A Comment, Written on September 9th, 2010 , Wild Life Tags: , , , ,
Bighorn Sheep are named for the large, curved horns borne by the males or rams. Females, or ewes, also have horns, but they are short with only a slight curvature. They range in color from light brown to grayish or dark, chocolate brown, with a white rump and lining on the back of all four legs. Males typically weigh 127-316 lb (58–143 kg), are 36-41 in (90–105 cm) tall at the shoulder, and 69-79 in (176–200 cm) long from the nose to the tail. Females typically are 75-188 lb (34–85 kg), 30-36 in (75–90 cm) tall and 54-67 in (138–171 cm) long.  Bighorns from the Rocky Mountains are relatively large, with males that occasionally exceed 500 lb (230 kg) and females that exceed 200 lb (90 kg). In contrast, Sierra Nevada Bighorn males weigh up to only 200 lb (90 kg) and females to 140 lb (60 kg). Males’ horns can weigh up to 30 lb (14 kg), as much as the rest of the bones in the male’s body.
Bighorn males, called rams, are famous for their large, curled horns. These impressive growths are a symbol of status and a weapon used in epic battles across the Rocky Mountains. Fighting for dominance or mating rights, males face each other, rear up on their hind legs, and hurl themselves at each other in charges of some 20 miles (32 kilometers) an hour. The resounding clash of horns can be heard echoing through the mountains as the confrontation is repeated—sometimes for many hours—until one ram submits and walks away. The animal’s thick, bony skull usually prevents serious injury.
A Rocky Mountain bighorn ram’s horns can weigh 30 pounds (14 kilograms)—more than all the bones in his body combined. Females (ewes) also have horns, but they are of smaller size.
Rocky Mountain bighorns inhabit the mountains from Canada south to New Mexico. They are relatives of goats, and have balance-aiding split hooves and rough hoof bottoms for natural grip. These attributes, along with keen vision, help them move easily about rocky, rugged mountain terrain.
Wild sheep live in social groups, but rams and ewes typically meet only to mate. Rams live in bachelor groups and females live in herds with other females and their young rams. When fall mating arrives, rams gather in larger groups and ram fighting escalates. Usually only stronger, older rams (with bigger horns) are able to mate.
In winter, bighorn herds move to lower-elevation mountain pastures. In all seasons, these animals eat available grass, seeds, and plants. They regurgitate their food to chew it as cud before swallowing it for final digestion.
Lambs are born each spring on high, secluded ledges protected from bighorn predators such as wolves, coyotes, and mountain lions—though not the golden eagles which target lambs. Young can walk soon after birth, and at one week old each lamb and its mother join others in a herd. Lambs are playful and independent, though their mothers nurse them occasionally for four to six months.

Bighorn Sheep are named for the large, curved horns borne by the males or rams. Females, or ewes, also have horns, but they are short with only a slight curvature. They range in color from light brown to grayish or dark, chocolate brown, with a white rump and lining on the back of all four legs. Males typically weigh 127-316 lb (58–143 kg), are 36-41 in (90–105 cm) tall at the shoulder, and 69-79 in (176–200 cm) long from the nose to the tail. Females typically are 75-188 lb (34–85 kg), 30-36 in (75–90 cm) tall and 54-67 in (138–171 cm) long.  Bighorns from the Rocky Mountains are relatively large, with males that occasionally exceed 500 lb (230 kg) and females that exceed 200 lb (90 kg). In contrast, Sierra Nevada Bighorn males weigh up to only 200 lb (90 kg) and females to 140 lb (60 kg). Males’ horns can weigh up to 30 lb (14 kg), as much as the rest of the bones in the male’s body.Bighorn males, called rams, are famous for their large, curled horns. These impressive growths are a symbol of status and a weapon used in epic battles across the Rocky Mountains. Fighting for dominance or mating rights, males face each other, rear up on their hind legs, and hurl themselves at each other in charges of some 20 miles (32 kilometers) an hour. The resounding clash of horns can be heard echoing through the mountains as the confrontation is repeated—sometimes for many hours—until one ram submits and walks away. The animal’s thick, bony skull usually prevents serious injury.A Rocky Mountain bighorn ram’s horns can weigh 30 pounds (14 kilograms)—more than all the bones in his body combined. Females (ewes) also have horns, but they are of smaller size.Rocky Mountain bighorns inhabit the mountains from Canada south to New Mexico. They are relatives of goats, and have balance-aiding split hooves and rough hoof bottoms for natural grip. These attributes, along with keen vision, help them move easily about rocky, rugged mountain terrain.Wild sheep live in social groups, but rams and ewes typically meet only to mate. Rams live in bachelor groups and females live in herds with other females and their young rams. When fall mating arrives, rams gather in larger groups and ram fighting escalates. Usually only stronger, older rams (with bigger horns) are able to mate.In winter, bighorn herds move to lower-elevation mountain pastures. In all seasons, these animals eat available grass, seeds, and plants. They regurgitate their food to chew it as cud before swallowing it for final digestion.Lambs are born each spring on high, secluded ledges protected from bighorn predators such as wolves, coyotes, and mountain lions—though not the golden eagles which target lambs. Young can walk soon after birth, and at one week old each lamb and its mother join others in a herd. Lambs are playful and independent, though their mothers nurse them occasionally for four to six months.

Source: www.nationalgeographic.com, www.wikipedia.org

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Leave A Comment, Written on September 5th, 2010 , Wild Life Tags: , , ,
Piranhas are found in the Amazon basin, in the Orinoco, in rivers of the Guyanas. All piranhas have a single row of sharp teeth in both jaws; the teeth are tightly packed and interlocking (via small cusps) and used for rapid puncture and shearing. Individual teeth are typically broadly triangular, pointed and blade-like (flat in profile). There is minorvariation in the number of cusps; in most species, the teeth are tricuspid with a larger middle cusp which makes the individual teeth appear markedly triangular. The exception is Pygopristis, which has pentacuspid teeth and a middle cusp usually only slightly larger than the other cusps. In the scale-eating Catoprion, the shape of their teeth is markedly different and the premaxillary teeth are in two rows, as in most other serrasalmines.
Piranhas are important ecological components of their native environments. Although largely restricted to lowland drainages, these fish are widespread and inhabit diverse habitats within both lotic and lentic environments. Some piranha species are abundant locally, and multiple species often occur together.
Piranha teeth are often used to make tools and weapons by the indigenous population. Piranha are also popular as food, although if an individual piranha is caught on a hook or line it may be attacked by other (free) piranhas.Piranha are commonly consumed by subsistence fishermen and often sold for food in local markets. In recent decades dried specimens have been marketed as tourist souvenirs. Piranhas occasionally bite and sometimes injure bathers and swimmers. A piranha bite is considered more an act of carelessness than that of misfortune, but piranhas are a considerable nuisance to commercial and sport fishers because they steal bait, mutilate catch, damage nets and other gear, and may bite when handled.

Piranhas are found in the Amazon basin, in the Orinoco, in rivers of the Guyanas. All piranhas have a single row of sharp teeth in both jaws; the teeth are tightly packed and interlocking (via small cusps) and used for rapid puncture and shearing. Individual teeth are typically broadly triangular, pointed and blade-like (flat in profile). There is minor variation in the number of cusps; in most species, the teeth are tricuspid with a larger middle cusp which makes the individual teeth appear markedly triangular. The exception is Pygopristis, which has pentacuspid teeth and a middle cusp usually only slightly larger than the other cusps. In the scale-eating Catoprion, the shape of their teeth is markedly different and the premaxillary teeth are in two rows, as in most other serrasalmines.
Piranhas are important ecological components of their native environments. Although largely restricted to lowland drainages, these fish are widespread and inhabit diverse habitats within both lotic and lentic environments. Some piranha species are abundant locally, and multiple species often occur together.
Piranha teeth are often used to make tools and weapons by the indigenous population. Piranha are also popular as food, although if an individual piranha is caught on a hook or line it may be attacked by other (free) piranhas.Piranha are commonly consumed by subsistence fishermen and often sold for food in local markets. In recent decades dried specimens have been marketed as tourist souvenirs. Piranhas occasionally bite and sometimes injure bathers and swimmers. A piranha bite is considered more an act of carelessness than that of misfortune, but piranhas are a considerable nuisance to commercial and sport fishers because they steal bait, mutilate catch, damage nets and other gear, and may bite when handled.

They are the most ferocious fish in the world. Even the most formidable fish, the sharks or the barracudas, usually attack things smaller than themselves. But the piranhas habitually attack things much larger than themselves. They will snap a finger off a hand incautiously trailed in the water; they mutilate swimmers—in every river town in Paraguay there are men who have been thus mutilated; they will rend and devour alive any wounded man or beast; for blood in the water excites them to madness. They will tear wounded wild fowl to pieces; and bite off the tails of big fish as they grow exhausted when fighting after being hooked. But the piranha is a short, deep-bodied fish, with a blunt face and a heavily undershot or projecting lower jaw which gapes widely. The razor-edged teeth are wedge-shaped like a shark’s, and the jaw muscles possess great power. The rabid, furious snaps drive the teeth through flesh and bone. The head with its short muzzle, staring malignant eyes, and gaping, cruelly armed jaws, is the embodiment of evil ferocity; and the actions of the fish exactly match its looks. I never witnessed an exhibition of such impotent, savage fury as was shown by the piranhas as they flapped on deck. When fresh from the water and thrown on the boards they uttered an extraordinary squealing sound. As they flapped about they bit with vicious eagerness at whatever presented itself. One of them flapped into a cloth and seized it with a bulldog grip. Another grasped one of its fellows; another snapped at a piece of wood, and left the teeth-marks deep therein. They are the pests of the waters, and it is necessary to be exceedingly cautious about either swimming or wading where they are found. If cattle are driven into, or of their own accord enter, the water, they are commonly not molested; but if by chance some unusually big or ferocious specimen of these fearsome fishes does bite an animal—taking off part of an ear, or perhaps of a teat from the udder of a cow—the blood brings up every member of the ravenous throng which is anywhere near, and unless the attacked animal can immediately make its escape from the water it is devoured alive.

Source: http://en.wikipedia.org

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