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Skulls of a long-tailed weasel (top), a stoat (bottom left) and least weasel (bottom right), as illustrated in Merriam's Synopsis of the Weasels of North America. The long-tailed weasel is the product of a process begun 5–7 million years ago, when northern forests were replaced by open grassland, thus prompting an explosive evolution of small, burrowing rodents.
It has reddish coloration on some parts of its body, including the legs, sides, feet, chest, and back, as well as on the sides of the head and neck. White fur is seen on the ears, throat, chest, belly, and hind legs, and it has a black stripe along the middle of its tail, which ends in a black tip.
Like the bison it has evolved large muscles on top of its neck to help it shovel snow to find winter feed. [1] White rhinoceros - This species of rhino has a bulge on the back of its neck made of thickened skin, a pad of fat, thick muscle and ligament that support the animal's massive head. [1]
They have slender bodies and long legs. Red ruffed lemurs have a narrow snout with small back ears that are sometimes hidden by their long fur. They groom themselves using their toothcomb. [citation needed] As their name would suggest, they have a rust-coloured ruff and body. Their heads, stomachs, tails, feet, and the insides of their legs are ...
The capybara has a heavy, barrel-shaped body and short head, with reddish-brown fur on the upper part of its body that turns yellowish-brown underneath. Its sweat glands can be found in the surface of the hairy portions of its skin, an unusual trait among rodents. [7] The animal lacks down hair, and its guard hair differs little from over hair ...
Like many mammals, grizzly bears are covered in thick fur. A fur is a soft, thick growth of hair that covers the skin of almost all mammals. It consists of a combination of oily guard hair on top and thick underfur beneath. The guard hair keeps moisture from reaching the skin; the underfur acts as an insulating blanket that keeps the animal ...
Juvenile red foxes are known as kits. Males are called tods or dogs, females are called vixens, and young are known as cubs or kits. [14] Although the Arctic fox has a small native population in northern Scandinavia, and while the corsac fox's range extends into European Russia, the red fox is the only fox native to Western Europe, and so is simply called "the fox" in colloquial British English.
Giraffidae: Giraffids have a pair of skin covered bony bumps on their heads, called ossicones. Cervidae: Most deer have antlers, which are not true horns due to lacking a bone core and made of keratin. Rhinocerotidae: The "horns" of rhinos are made of keratin and lack a bone core.