Mammals, for instance, differ dramatically in their maximal lifespans—from the tiny forest shrew, which lives only one or two years, to the bowhead whale, capable of living for more than 200 years.

It wasn't looking good for Major. The terrier had been badly attacked by another dog, and his back leg was severely injured. To make matters worse, a record-breaking snowstorm had made it impossible ...

During his regular checkup, a 9-year-old clouded leopard named Masala undergoes a procedure to get a tiny heart monitor implanted under his skin at the Smithsonian's Conservation Biology Institute in ...

Animal communication is more than simple signals. Mammals use sounds, expressions, and touch to convey emotions and social ...