So, from the beginning what made a dog man's best friend is really the character of the wolf. Behaviour Drives are the instincts that make your dog act the way he does. Everything that your dog does is determined by a specific behaviour drive. When a dog bites, chases cats, or raises a litter of puppies, they are being driven to do so by their instincts or genetic make-up. A trainer looks for these specific drives or instincts when beginning training.
Every dog has similar drives relating back to their common ancestor, the wolf.
Through selective breeding, humans have emphasised certain drives in certain breeds according to the tasks desired. Pack Behaviour is social behaviour. The dog wants to be part of a group or pack. In order to maintain social order within the pack creation rules of behaviour must be observed. Dogs bond closely with humans and want to be with them.