There are several distinct traits that make mammals different from other animals, with the most significant ones being that ...

A massive group of dolphins was recently spotted off California’s Central Coast, participating in what researchers say was ...

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 ...

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 ...

More than half of all mammal species are rodents, a group that includes squirrels, hamsters, mice and guinea pigs. Rodents have long, sharp front teeth that they use for biting and gnawing.

As a group, haplorhine primates do tend to have very large brains relative to body size (Martin, 1990). In this respect, haplorhines are unusual but not unique, since some other mammals (e.g ...

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 ...

Faced with an evolving group of competing organisms -- the mammals -- perhaps dinosaurs were driven to extinction by competition. Packs of small mammals would have competed with dinosaurs for food.

The extinction of the dinosaurs was one such major event, eliminating a once-dominant group of competitors while some mammals survived. But the mammals did not simply step into ecological roles ...