When one thinks of an aggressive puppy, it’s usually a puppy that bites either other puppies, people, or both. Aggressive puppies have other behavioral patterns as well. They may be disobedient, loud, and have a tendency to jump up on people. Jumping on people is not necessarily an act of malice, but certainly shows a lack of respect.At the risk of oversimplification, if you have an aggressive puppy, the cure is for you to become the Alpha dog. You must be the leader of the pack, and the puppy must recognize its subservient role. This of course is more easily said than done.