An essential book in the books of view of behavior, because if today we agree to consider that the vast majority of dog behavior reflect their relationship with their master, but still very few cases where we are confronted with pathologies inked at birth. Homeowners who are in this situation and have tried everything working on the behavior of their dogs, are very helpless before the possible perspective of euthanasia. This book helps take the final step before the final decision, the possible use of medical drugs to allow a drop in pressure in the dog before resuming work on behavior. This is a very hard road and full of failures, but also unexpected successes. Far from presenting the subject with idealism, Dr. Beata offers a useful book for those having tried everything, looking for a way past.