Thorn is a BIG boy -- 29 inches tall, 95 pounds. And, yep, his grip is slipping here. Thorn's greatest downfall in the bitework isn't lack of drive or nerves. It's the lack of genetics. He has no genetic grip, though the desire to work is there. That's ok, he's got heart, which is what is most important of all. It just proves the importance of working breeding.