Some list state animals, some specify state mammals and some even include land and ocean mammals. Some don't have one at all. Colorado's state mammal is the Rocky Mountain bighorn sheep and it ...

Two species of rhinos are contenders for the title of rarest land mammal for different reasons ... Others on the critically endangered list include the African forest elephant, black rhinos ...

The story of whales’ evolution from land mammals is hidden in their genes. The oceans are thought to be where life started but about 50-million years ago, something incredible happened ...

Ambulocetus was a true marvel—a mammal bearing both the marks of its land-dwelling ancestors and the beginnings of a life at sea. Its name, meaning “walking whale,” perfectly captures its ...

The new, more humid subtropical conditions nurtured abundant palms and guavas. Land mammals responded in kind, radiating and diversifying into many new forms. As the climate cooled and dried ...