Illustrated Dogwatching Author:Desmond Morris What exactly is it about the canine personality that has singled out the dog, from all the 4236 species of non-human mammals, to be man's best friend? Desmond Morris gives answers to this and many other questions, which include: why does a dog bury a bone?; why does a dog wag its tail?; do dogs have a sixth sense?; and do dogs show remorse?