A new study suggests dogs began to diversify about 11,000 years earlier than we thought. Plus, a long-running experiment to ...

Modern wolves and dogs both descend from an ancient wolf population that lived alongside woolly mammoths and cave bears. Iza Lyson/500px Prime via Getty Images Dogs were the first of any species that ...

Your pet dog -- and every other dog in the world -- most likely descended from a single population of wolves that lived 20,000 to 40,000 years ago, according to a new study in the journal Nature ...

The gray wolf, also called the timber wolf, is the largest member of the canine family with fur ranging from gray to brown, black or white. Smithsonian's National Zoo and Conservation Biology ...