From chihuahuas to great Danes, dogs differ more in size than any other mammal species on the planet. A mutation behind such variation has been traced to an unexpected source: ancient wolves. The ...

National Institutes of Health researchers have shown that areas of the genome related to brain development harbor variants that may account for behavioral differences among different dog lineages. The ...

Explore the fascinating ways dog breeds continue to evolve through genetic influences. The fluffy Afghan Hound and the sleek Greyhound may seem worlds apart. Yet, their coat length is determined by ...

A few months ago I was asked to write an endorsement for a forthcoming book edited by University of Pennsylvania dog expert Dr. James Serpell called The Domestic Dog: Its Evolution, Behavior and ...

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 ...