Since their domestication millennia ago, dogs have been man’s best friend, and aside from friendship, centuries of selective breeding have tailored them for tasks like herding, hunting and guarding—or so we thought. Since their domestication millennia ago, dogs have been man’s best friend, and aside from friendship, centuries of selective breeding have tailored them for tasks like herding, hunting and guarding—or so we thought. Evolution Veterinary medicine Phys.org – latest science and technology news stories