Forgot to answer your question about cage aggression!

He would sound off like he was going to rip my throat out whenever I walked toward the crate. I took him out and had a talk with him about manners and then gave him a Kong stuffed with peanut butter and back into the crate he went. He has never even offered to snap at me....just mouthing off. He was over that in 2 days and I don't really blame him after being in the pound for 22 days.