This is a very sad situation. I really don't know what to say. Smokey bit my sister (provoked..she tried to take a bone from him and we all knew he was food aggressive) bad enough that she had to have plastic surgery on her nose. He bit other family members numerous times (none very bad) after that as well, he could not be groomed without a muzzle the entire time when he was older. But we had him years (since he was a pup) before that occurred, we were advised to have him PTS because of it but we did not. I would not classify his bites as "attacks." I really don't know what I would do if I had a dog for only a few weeks and they attacked a human unprovoked. Unless you are in that situation I don't think it is really fair to judge. I've groomed dogs long enough to say that a small dog is very capable of leaving a 4 inch gash.