Mammals are among the most adaptable animals on the planet.

They are found on every continent and in every ocean, and range in size from tiny bumblebee bats to enormous blue whales. 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 swim, shuffle, and dive. A few even fly.

Diet and behavior vary, too. Many carnivores, for example, are top predators that live generally solitary lives. These include jaguars, tigers, and polar bears. By contrast, lions, otters, wolves, and dolphins live in family groups. Even more social are some of the herbivores, especially hoofed animals like deer and zebra. By living in large groups, they gain both protection against becoming another animal’s meal and more opportunities to breed. Among omnivores, primates are known for their high intelligence, and rodents for their high numbers.

Here we have simply stated out facts about mammals, then the distinctive characteristics of mammals and at last we have done the most common type of classification of mammals. Mammals are warm blooded air-breathing vertebrate animals that are categorized by their hair, three middle ear bones and the mother nursing their young ones with milk.