I don't think crates will work for him. He sounds too much like Rival. A crate did not work for Rival, he destroyed 3 of them. The large metal Fila size crates, not to mention the cuts on his face from tearing out of them were terrible. The strange thing, since Todd has moved back home with us for a few months. Rival has not had any problems. Thank goodness! And I do have to leave and go grocery shopping and other stuff. I wonder if some dogs are claustrophobic, just like people? Being in a small confined space would make his anxiety worse if he is. Is he allowed to go in/out whenever he wants? I think that may have made the difference for Rival.