Problems with behavior are a common thing in canines. If you look back at the history, and lineage of dogs, their relatives being coyotes, wolves, and various other animals of pure aggression puts them in the middle of a difficult situation. While their brains are set to hunt, to travel in packs, and survive on their own we teach them the opposite.
When you decide to handle your dog's behavioral issues, you need to understand the multiple, different causes of them. Every issue can be grouped with others and canines will continue to do them and they will evolve into worse things later if not restrained, and trained.
Dogs with aggression express it in a couple of different types of behaviors including the most common, which are biting and barking.
This book will tell you everything you need to know about owning, buying, breeding, and taking care of your new dog or puppy. It will show you ways to stop aggression in your dog, and tell you everything you need to know about dog aggression, and all kinds of information about the breeds of dogs.