Introduction -- Why are modern dogs so troubled? -- The most common types of canine aggression -- The healing power of three--the owner, the veterinarian, and the professional trainer -- Top methods used by professional trainers to address aggression and reactivity -- Other behavior concerns and real-world solutions -- Raising a well-rounded puppy -- Must-have skills for your dog -- What not to do in the name of training -- Day-to-day living with a troubled dog -- How to find help for your dog -- The most difficult decision--behavioral euthanasia -- Resources for owners.