It seems the diversity of domestic dogs first began developing thousands of years before humans started intensely shaping modern breeds in the 19th century—challenging what we thought about canine ...

The crude view of evolution is often stark: a struggle for life in the wilderness, dominated by the strong, the cunning, the fierce, or the exquisitely camouflaged. And yet, who thrives today? Dogs.

Modern dog breeds come in a mind-boggling array of shapes and sizes—from Chihuahua to Great Dane, corgi to greyhound, pug to German shepherd. In fact, the domestic dog, Canis familiaris, shows more ...

Finally, Fido has a proper family tree. Genetic researchers have assembled the most definitive evolutionary tree of dogs using gene sequences from 161 modern breeds. The map of dog breeds and how they ...

Learn how dogs, cats, and toddlers were tested for spontaneous helping behavior — and why evolution may explain why most dogs ...