Synapsida

Red muntjac For many people, the word 'deer' likely conjures up a medium to large animal with large branching antlers in the males. ...

Anaptomorphus , an omomyid from Wyoming The primates are one of the larger groups of mammals, with literally hundreds of living species know...

Bats are usually sociable animals. Since large caves are relatively rare, when bats find one, literally millions of individuals can pack the...

Roe deer Of the three species of deer native to Britain, the one that's most often overlooked is probably the roe deer ( Capreolus capr...

Thoatherium For most of the Age of Mammals, South America was an island continent, separated from its northern counterpart by a wide sea. Ev...

As a general rule, male mammals don't have much to do with raising their young. In many cases, that's because the species in questio...

Today, there are eight living species of bear. Six of these are "ursine bears", members of a subfamily distributed across the nort...