I just wanted to add one comment about Odin. You said that he has only been with you for a couple months. The key here is patience and not to give up. Who knows what this dog went through in the two years of his life. Don't expect that to be overcome in such a short time. Trust from a dog has to be earned and sometimes it takes a while. And then as Carrie said, sometimes it takes finding just the right method for the particular dog. Good luck and keep up the good work.