The role for which a dog was bred—say retrieving birds—is reflected in their brain structure, according to a study of 33 breeds.
Over the last 100 years, dogs have changed dramatically, all thanks to selective breeding. Once valued mainly for their ...
Humans have a long history of reshaping their canine companions, which evolved from ancient wolves. At least 10,000 years ago, Arctic peoples were using selective breeding to create sled dogs, ...