This book is about understanding your dog --- just why it behaves in a certain way. For instance, when a dog buries a bone--- whether it is in a hole in the garden or under the cushions of the sofa---it is behaving in an instinctive way that it has inherited from its wolf ancestors. Ethologists, scientists who study animals and their behaviour, have made many interesting discoveries about dogs, and we now know that their behaviour is made up partly of instincts inherited from wolves, and partly of habits learnt as puppies and young dogs.