Though it's sometimes hard to believe, our modern canine friends are related to wolves—most closely to the gray wolf. The two animals are thought to share a common, extinct wolf ancestor. But dogs and wolves are very different in terms of evolution and behavior. read more
Dr. Smith: Dogs are very closely related to wolves, most closely to the gray wolf, as measured by genetic testing. For many years, dogs were thought to have descended from wolves, but the current thinking is that they share a common ancestor. read more
Dogs and modern wolves both came from the same now-extinct wolf ancestor. The main difference between the two is how they evolved. read more