The hedgehog is insectivorous and is in the same family as moles and shrews.

Hedgehog

The hedgehog is insectivorous and is in the same family as moles and shrews.

An illustration of horses running wild through town.

Horses Running Wild Through Town

An illustration of horses running wild through town.

Hyenas look like dogs, but are more closely related to cats and civets. Their front legs are longer than the rear ones, causing a sloping appearance. They tend to scavenge at night, but may also hunt for food.

Striped Hyena

Hyenas look like dogs, but are more closely related to cats and civets. Their front legs are longer…

Sure-footed hooved mammals found in mountainous areas. Males have heavily ridged horns that curve up and back.

Ibex

Sure-footed hooved mammals found in mountainous areas. Males have heavily ridged horns that curve up…

These mammals have pointed snouts and long bodies which they use to hunt prey of snakes or eggs.

Ichneumon

These mammals have pointed snouts and long bodies which they use to hunt prey of snakes or eggs.

Similar to the fox in appearance, but without the bushy tail. They are found in Africa and S. Asia. Like the fox, they forage at night and stay under cover during the day.

Jackal

Similar to the fox in appearance, but without the bushy tail. They are found in Africa and S. Asia.…

The jaguar can spend a great deal of time in trees, but are known to also hunt fish. They range from S.W. US to Argentina.

Jaguar

The jaguar can spend a great deal of time in trees, but are known to also hunt fish. They range from…

A large jungle cat known for it's spotted pelt.

Jaguar

A large jungle cat known for it's spotted pelt.

the jerboa have long tails with tufted ends, and long hind legs, which enable them to make enormous leaps. They are about the size of a rat.

Jerboa

the jerboa have long tails with tufted ends, and long hind legs, which enable them to make enormous…

Kangaroos are found in Australia, New Guinea and Tasmania. They have powerful rear legs and a muscular tail used for hopping and for defending themselves against predators.

Kangaroo

Kangaroos are found in Australia, New Guinea and Tasmania. They have powerful rear legs and a muscular…

Kangaroos are found in Australia, New Guinea and Tasmania. They have powerful rear legs and a muscular tail used for hopping and for defending themselves against predators.

Kangaroo

Kangaroos are found in Australia, New Guinea and Tasmania. They have powerful rear legs and a muscular…

An illustration of a kangaroo pelvis. "M, marsupial bones, borne upon P, pubis; Il, ilium; Is, ischium; O, obturartor foramen; A, acetabulum; S, sacrum;

Kangaroo Pelvis

An illustration of a kangaroo pelvis. "M, marsupial bones, borne upon P, pubis; Il, ilium; Is, ischium;…

The kinkajou lives in S. America and spends most of its life in trees. It hunts at night for insects and fruits. It has a strong muscular tail that it uses to hold on to tree branches and it has a long tongue that it may use to gather honey.

Kinkajou

The kinkajou lives in S. America and spends most of its life in trees. It hunts at night for insects…

Koalas are marsupials, which means the females have a pouch of skin into which the very immature young are placed, and where they remain until able to take care of themselves.

Koala

Koalas are marsupials, which means the females have a pouch of skin into which the very immature young…

A native of S. Africa and similar in appearance to the antelope. The male's horns are nearly five feet long, and their spiral form adds to its distinction.

Kudu

A native of S. Africa and similar in appearance to the antelope. The male's horns are nearly five feet…

The lemur (Latin, lemures, ghosts) get their name from the fact that their movements are noiseless, and are made mostly in the night. They live in troops, clinging to branches of trees. They eat fruits, eggs, insects and birds.

Lemur

The lemur (Latin, lemures, ghosts) get their name from the fact that their movements are noiseless,…

The forelimb of chimpanzee. (c) collar bone; (s) shoulder blade; (h) humerus; (r) radius; (u) ulna; (d) bones of wrist; (m) bones of hand; (p) bones of fingers.

Chimp Limb

The forelimb of chimpanzee. (c) collar bone; (s) shoulder blade; (h) humerus; (r) radius; (u) ulna;…

The hindlimb of chimpanzee. (i) innominate bone; (f) thigh bone; (t) tibia; (s) fibula; (r) bones of ankle; (m) metatarsus; (p) phalanges.

Chimp Limb

The hindlimb of chimpanzee. (i) innominate bone; (f) thigh bone; (t) tibia; (s) fibula; (r) bones of…

The lion is a mammal of the family Felidae and one of four "big cats" in the Genus <em>Panthera</em>. The lion is the second largest cat, after the tiger. The male lion, easily recognized by his mane, weighs between 330-500 lbs. In the wild, lions live for around 10-14 years, while in captivity they can live for 20 years. While once found throughout much of Africa, Asia and Europe, it is presently encountered in the wild only in Africa and in India.

Lion

The lion is a mammal of the family Felidae and one of four "big cats" in the Genus Panthera.…

The loris is found in India. It is skillful in capturing birds, which it does in the night when they are asleep.

Loris

The loris is found in India. It is skillful in capturing birds, which it does in the night when they…

The Canada lynx is remarkable for its gait, going by successive leaps with the back arched. Its diet consists primarily of the snowshoe hare.

Canada Lynx

The Canada lynx is remarkable for its gait, going by successive leaps with the back arched. Its diet…

An illustration of a man looking at monkeys in a cage.

Man Looking at Monkeys

An illustration of a man looking at monkeys in a cage.

the manatee, an aquatic mammal, is found along both shores of the Atlantic in tropical regions and in the large rivers.

Manatee

the manatee, an aquatic mammal, is found along both shores of the Atlantic in tropical regions and in…

The mandrill is known for its various and brilliant coloration. Its coat is olive brown and it has a brightly colored naked rump, Usually blue or purple, or sometimes red. It has a red line down its muzzle that runs around the nostrils. The sides of the face are blue.

Mandrill

The mandrill is known for its various and brilliant coloration. Its coat is olive brown and it has a…

The marten, or pole-cat, is a carnivorous member of the weasel family.

Marten

The marten, or pole-cat, is a carnivorous member of the weasel family.

The pine marten lives most of its life in trees, but does hunt on the ground. It feeds primarily on mice, squirrel, birds, frogs and fish.

Pine Marten

The pine marten lives most of its life in trees, but does hunt on the ground. It feeds primarily on…

The eyes of the mole are very small, but its hearing and smell are acute. Its fur is fine and soft, and doesn't retain dirt although it is constantly surrounded by it. Its front paws are very large and strong and used for digging.

Mole

The eyes of the mole are very small, but its hearing and smell are acute. Its fur is fine and soft,…

Moles are well fitted for digging by the very large front feet and strong muscles of the front legs. Th eyes have become rudimentary because they live in darkness.

Mole

Moles are well fitted for digging by the very large front feet and strong muscles of the front legs.…

Moles are nocturnal, burrowing animals, and the feet have strong digging claws.

Mole

Moles are nocturnal, burrowing animals, and the feet have strong digging claws.

Monkey, a word loosely applied to apes, baboons, Old and New World monkeys, marmosets and lemurs.

Colobus Monkey

Monkey, a word loosely applied to apes, baboons, Old and New World monkeys, marmosets and lemurs.

Monkey, a word loosely applied to apes, baboons, Old and New World monkeys, marmosets and lemurs.

Hanaman Monkey

Monkey, a word loosely applied to apes, baboons, Old and New World monkeys, marmosets and lemurs.

The spider monkey uses its tail in climbing. It uses its tail also to feel with, and to seize small things. The end of the tail is without hair and very sensitive.

Spider Monkey

The spider monkey uses its tail in climbing. It uses its tail also to feel with, and to seize small…

Monkey, a word loosely applied to apes, baboons, Old and New World monkeys, marmosets and lemurs.

Spider Monkey

Monkey, a word loosely applied to apes, baboons, Old and New World monkeys, marmosets and lemurs.

Monkey, a word loosely applied to apes, baboons, Old and New World monkeys, marmosets and lemurs.

Wooly Monkey

Monkey, a word loosely applied to apes, baboons, Old and New World monkeys, marmosets and lemurs.

Monkey, a word loosely applied to apes, baboons, Old and New World monkeys, marmosets and lemurs.

Capuchin Monkey

Monkey, a word loosely applied to apes, baboons, Old and New World monkeys, marmosets and lemurs.

One of the largest species of hooved mammals in the deer family. Known as the moose in North America, and the elk in Eurasia. It is found in colder climates of N. America and Eurasia.

Moose

One of the largest species of hooved mammals in the deer family. Known as the moose in North America,…

When a dormouse holds a nut to make a hole in it, he holds it between his two forepaws like hands.

Dormouse

When a dormouse holds a nut to make a hole in it, he holds it between his two forepaws like hands.

Ocelot, a leopard-like cat originally from the tropics. It is an agile climber.

Ocelot

Ocelot, a leopard-like cat originally from the tropics. It is an agile climber.

Mammals from the Oligocene age. Shown are the Titanothere, Entelodont, Hyracodon, Uintathere, and the Hyaenodou. The six-foot man is drawn to the same scale as the other animals.

Mammals from the Oligocene Mammals

Mammals from the Oligocene age. Shown are the Titanothere, Entelodont, Hyracodon, Uintathere, and the…

The opossum is nocturnal and arboreal. At night it searches for insects, birds, eggs, fruit, etc. It uses its tail for climbing and when attacked it feigns death, giving rise to the origin of the common phrase, playing 'possum.

Opossum

The opossum is nocturnal and arboreal. At night it searches for insects, birds, eggs, fruit, etc. It…

"Opossum, of the marsupial family. Some species have pouches while others do not, and will therefore carry young upon their backs."mdash Beach, 1909

Opossum

"Opossum, of the marsupial family. Some species have pouches while others do not, and will therefore…

"Monkey, a word loosely applied to apes, baboons, Old and New World monkeys, marmosets and lemurs."&mdash; Beach, 1909

Orangutan

"Monkey, a word loosely applied to apes, baboons, Old and New World monkeys, marmosets and lemurs."—…

A collage of different types of organic life including deer in a forest, farmers harvesting wheat, and an alligator in a tropical region.

Organic Life, Collage of

A collage of different types of organic life including deer in a forest, farmers harvesting wheat, and…

The oryx is a native of S. Africa. It is one of the fastest animals in that region. It is similar in appearance to the antelope but its tail is like that of the horse, and its horns are dark and perfectly straight.

Oryx

The oryx is a native of S. Africa. It is one of the fastest animals in that region. It is similar in…

Musk Ox or Musk Sheep, an animal combining characteristics of the ox and sheep; in size and shape resembling ox, in habit the sheep.

Musk Ox

Musk Ox or Musk Sheep, an animal combining characteristics of the ox and sheep; in size and shape resembling…

This is a type of anteater, covered in an armor of horny scales. When attacked, they roll themselves up, and raise their sharp-edged scales. They are hunted for their meat.

Pangolin

This is a type of anteater, covered in an armor of horny scales. When attacked, they roll themselves…

The platypus is an interesting mammal, which inhabits the rivers and lakes of Australia and Tasmania.

Platypus

The platypus is an interesting mammal, which inhabits the rivers and lakes of Australia and Tasmania.

The porcupine is covered in spikes or quills that are its chief defense. If it can't escape, it stands still, with its quills bristling, or even may back into its enemy. It can not shoot them however, from its body.

Porcupine

The porcupine is covered in spikes or quills that are its chief defense. If it can't escape, it stands…

Quagga, a striped wild ass, related to the zebra, but now extinct.

Quagga

Quagga, a striped wild ass, related to the zebra, but now extinct.

Raccoon, a tree-climbing, nocturnal animal belonging to the bear family and restricted to North and South america.

Raccoon

Raccoon, a tree-climbing, nocturnal animal belonging to the bear family and restricted to North and…

The animal which carried the palgue germs into over fifty countries.

Rat

The animal which carried the palgue germs into over fifty countries.

The seal is an aquatic mammal, whose limbs are formed into flippers. The tail tapers at the end of the body. The front flippers are used as paddles while the rear paws help to steer the animal.

Seal

The seal is an aquatic mammal, whose limbs are formed into flippers. The tail tapers at the end of the…

The elephant seal is the largest fin-footed mammal. It can reach 18 feet in length and weigh 5000 pounds. It gets its name from its long snout that resembles that of an elephant.

Elephant seal

The elephant seal is the largest fin-footed mammal. It can reach 18 feet in length and weigh 5000 pounds.…

Fur Seals make up one of the two distinct groups of mammals called "seals". Both the fur seals and the true seals are members of the Pinnipedia, which is usually regarded as a suborder of the order Carnivora but sometimes as an independent order. However, the fur seals, like their close relatives the sea lions, retain some ability to walk on land as their hind limbs can be brought forward under the body to bear the animal's weight, and retain small but visible external ears.

Seals and Walrus

Fur Seals make up one of the two distinct groups of mammals called "seals". Both the fur seals and the…

An illustration of a herd of sheep.

Sheep

An illustration of a herd of sheep.

The Rocky Mountain Sheep is much larger than the domestic sheep, (Smiley, 1839).

Mountain Sheep

The Rocky Mountain Sheep is much larger than the domestic sheep, (Smiley, 1839).

Shrews are among the smallest mammals. They have long snouts that they use in grubbing the earth in search of worms and insects.

Shrew

Shrews are among the smallest mammals. They have long snouts that they use in grubbing the earth in…

In the bat, the forelimbs are much longer than the hindlimbs and have several of the fingers greatly lengthened.

Bat Skeleton

In the bat, the forelimbs are much longer than the hindlimbs and have several of the fingers greatly…

The skeleton of a beaver.(c) cervical region of vertebral column; (d) dorsal region; (b) lumbar region; (s) sacrum; (t) caudal region.

Beaver Skeleton

The skeleton of a beaver.(c) cervical region of vertebral column; (d) dorsal region; (b) lumbar region;…

The lower jaw and teeth of the Megatherium, elephant sized sloth. The teeth are quandrangular, or triangular cylinder, shaped and grew during their life time.

Lower Jaw of Megatherium Fossil Skeleton

The lower jaw and teeth of the Megatherium, elephant sized sloth. The teeth are quandrangular, or triangular…