The dog, Canis familiaris, is a direct descendent of the gray wolf, Canis lupus: In other words, dogs as we know them are domesticated wolves. Not only their behavior changed; domestic dogs are different in form from wolves, mainly smaller and with shorter muzzles and smaller teeth . How and when this domestication happened has been a matter of speculation. It was thought until very recently that dogs were wild until about 12,000 years ago. But DNA analysis published by scientists  date about 130,000 years ago for the transformation of wolves to dogs. This means that wolves began to adapt to human society long before humans settled down and began practicing agriculture. Scientists believe wolves were first attracted to human camps to scavenge for leftover food. Over time, some wolves started traveling with the nomadic humans. There’s even scientific evidence supporting the bond between humans and dogs. When people look into each other’s eyes, we bond emotionally...