One reason for their success is the way they move. Mammals as a group use every possible form of locomotion. Terrestrial species walk, run, jump, climb, hop, swing, dig, and burrow. Aquatic ones ...

However, as the last phase of the ice age approached, these mammals vanquished from Earth, leaving behind a mystery to be unfolded by scientists. To study the extinction of megafauna from the face ...

Monotremes, found only in Australia and New Guinea, are unique mammals that lay eggs, combining features of reptiles and ...

In a grove of acacia trees a group of giraffes, members of a family of mammals that until 20 million years ago were small forest dwellers, nibble at the top branches. A few miles away elephants ...

The order Cetacea includes marine mammals, such as whales, dolphins, and porpoises. Fossil evidence suggests that the cetaceans share a common ancestor with land-dwelling mammals that began living ...

It involved a major reorganization of limb anatomy and function in synapsids -- the group that includes both mammals and their non-mammalian ancestors -- eventually leading to the therian mammals ...

Marine mammals—a group of animals that are ecologically tied to the ocean environment—cannot thrive in confinement. No concrete tank or small sea pen can provide an animal with anything close to the ...

Voles are small mammals that tend to have large heads, compact bodies, and short noses. Microtus means “small ear” and the voles of this genus have short ears that barely protrude from the fur ...

It involved a major reorganization of limb anatomy and function in synapsids—the group that includes both mammals and their non-mammalian ancestors—eventually leading to the therian mammals ...