Here at Timberland, we do "Foster Dogs" - take in pups the local shelters assess as unadoptable. There are always a buncha dogs here - the newcommers learn to integrate with the pack, and the pack pretty much helps us teach 'em "The Rules" (of which there really aren't very many - mostly, just behave, don't fight, don't bite, don't jump on people, come, sit, down, stay, drop it, and don't run off). When we figure they're ready to move out into the world, we find 'em good homes with responsible, competent, knowledgeable owners.
Frank up there is a wolf-husky hybrid - goes about 100 pounds. Sweet mutt, really. He had a bad start, came from a really bad environmemt. He's been with us about 3 years now, and still has lotsa issues.
Too many folks think it would be "neat" to own a wolf hybrid. They're big, strong-willed, independent dogs, with both a well defined sense of pack order and a drive to rise as high in the pack as they can manage. If the human isn't capable of and fully committed to bein' the pack leader, the hybrid is gonna win that game, but likely lose his home in the process. We've fostered several; they eventually go to good, suitable homes, but it takes a while to get 'em ready for that in most cases.
All in all, I figure there are far more bad dog owners than bad dogs. It just plain ain't the dog's fault he got saddled with some idiot human who had no idea what was involved or how to deal with it.