Mammal

Kitti’s Hog-Nosed Bat

Mammalian Characteristics

Blue Whale

Platypus

Lumholtz’s Tree Kangaroo

Rodents

Polar Bear on an Ice Floe

Verreaux’s Sifaka

Pacific Walrus

Sperm Whale

Mountain Zebra

Gray Squirrel

Guanaco

Mole-Rat

Human Brain

Kanzi Listening to Human Speech

Scuba Divers and Dolphin

Elephant Emotions

Numbat

Red Wolf

Rocky Mountain Goat

Humpback Whales

Giraffe Birth

Kangaroo With Young in Pouch

Cheetah Running

Kangaroo Hopping

Greater Horseshoe Bat

Impala

Striped Skunk

Black Rhinoceros

Hedgehog

Snowshoe Hare in Summer and Winter

Mammalian Evolution

Saber-Toothed Cat

Morganucodon

Cave Painting, Lascaux

Domestic Dogs

Caffre

Belgian Heavy Draft Horse

White Lab Mouse

Endangered Gorilla

Giant Panda

African Elephant Killed by Poachers

Endangered Siberian Tiger

Whale Breaching