Here’s what scientists have learned about how a dog’s breed affects its health and behavior.

A new version of the virus is widespread in wild birds but had not previously been detected in cows.

Faced with a rash of shark deaths marked by brain swelling, Canadian and American scientists are trying to solve a marine mystery.

Faced with a rash of shark deaths marked by brain swelling, Canadian and American scientists are trying to solve a marine mystery.

The cases have spurred new pet food safety rules and poultry surveillance efforts.

Humans are known to invent private hand gestures. Chimps in the wild do, too, a new study suggests.