Thanks for the info and well wishes. His appointment is April 6th. Oh my yes, he wears a harness, not a regular collar. I am very over protective of my sweet boy. If you look at the second photo you can see the leash is attached further back. He has sort of a medium length coat which covers the harness in that pic. He did not like the harness at first but when he found out he got to go outside if he wore it, he happily cooperates now. He is the only one of the 4 that I have that was ever interested in getting outside. He snuck out a couple times before he was leash trained and I was a basket case until I got him back inside. Now he doesn't try to get out on his own. I love my sweet boy!