From palm-sized Chihuahuas to Great Danes that could pass for small horses, dogs today come in more shapes than any other mammal species on Earth. We often chalk that up to modern breeding that began ...

The enduring and profound connection between canines and human beings runs deep, and now research has revealed that it may go back even further than previously thought. According to a new ancient DNA ...

Our best friends come in a fantastic array of shapes and sizes; a Borzoi looks nothing like a Boston terrier, except for a certain fundamental, ineffable (except to taxonomists) doggyness about them.

All the pups we love—from chihuahuas to great danes—are descendants of the mighty gray wolf. But how did we end up with so many breeds? The story that’s often told is that dog diversity really took ...

It is not farfetched to say that dogs and people were made for each other, although how the partnership between these two vastly different species came about remains an enduring historical mystery. It ...

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 ...