So Long to Bad Dogs - This article from Atlantic Monthly explains the theory of animal behavior and the progress being made in treating phobias, anxiety, aggression and panic. K9 Separation Anxiety - This email discussion group serves as a support group as well as a source of information. Aggressive Behavior List - An email discussion group with trainers and dog owners addressing behavior modification. Dealing with Separation Anxiety - Causes of this problem and methods to alleviate it. Canine Aggression - Education, support and resources for pet owners. Aggression - Describes different types, and whether or not they are appropriate. Problem Barking - Causes and solutions are suggested. Submissive Urination - The causes are explained and an interactive solution suggested. Non-food Ingestion - Known as pica, this can cause serious health problems. The causes and solutions are explained. Thunderphobia - How to recognise and deal with this common characteristic. Tail Chasing - Explains why this is not always a playful activity, and how to stop it causing injury. Excessive Licking - Also known as Acral Lick Dermatitis or Lick Granuloma. Contributing factors are explained and solutions suggested. Separation Anxiety - This article includes a short video ( 2.7 Mb ) showing the typical stages and suggesting solutions. Rescue Dog Behavior Problems - These animals may have particular areas of difficulty. Behavior Problems and Solutions - Explains the alpha concept, or 'speaking wolf', and how an understanding of this can help with many issues such as barking, digging and jumping up. Relocation Anxiety - Suggestions are given for reducing the ill-effects of a family move, or when a dog is re-homed for any reason. Pet Care Articles from PETCO - Discusses methods of dealing with digging, jumping up, howling, scratching doors, stealing or begging for food, chewing and other misbehaviours. Aggressive Behavior - Understanding and working with the problem.