Answer

In this situation I'd want a professional evaluation of the dog by a veterinary behaviorist or a good trainer behaviorist perhaps one suggested by your vet. Petsmart does not come under that heading.

This is a young dog and may have issues due to mistakes made in socialization and training or he may be a dog with traits that limits his ability to behave peacefully with modern living conditions an stressors.

I find more dogs with training issues than with basic personality disorders. If the dog was over three years old I'd say you'd have a very difficult time changing behaviors but this age dog might be able to learn if given the right training.

On the other hand a known biter is a big insurance liability and a danger to your home and livelihood. I would suggest you view some of the videos here to see what I mean about changing behaviors http://www.veoh.com/collection/imotd

But if this is beyond your reach I do think euthanasia will be a better choice than rehoming the dog or leaving him at a shelter. The kind of people who want a biting dog usually are not the kind of people you would want to have your pet.

Hope this helps you!

Edited by NancyH on 9/28/2009 at 11:31 AM