Add Yahoo as a preferred source to see more of our stories on Google. Chihuahuas have about 0.2 percent wolf ancestry, according to a new study. While that chihuahua might seem about as similar to a ...

Add Yahoo as a preferred source to see more of our stories on Google. Remains on a small island in the Baltic Sea suggest that humans kept and cared for wolves for thousands of years before they ...

When scientists compared the DNA of thousands of dogs and wolves, they found the two species were not as separate as once thought. Nearly every dog, from Chihuahuas to huskies, carries traces of wolf ...

Dogs were the first of any species that people domesticated, and they have been a constant part of human life for millennia. Domesticated species are the plants and animals that have evolved to live ...

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 ...