Ronni, I'm glad he's on a treatment plan that will help him. He's so cute, great photo! Nice that he's so friendly, my old neighbor had a Chihuahua that was aggressive, growled and charged at everyone he could, was often allowed to be loose in front of his house, so I often had to watch my ankles when I was outside. He also bit his owner numerous times. I see a lot of friendly mellow Chihuahuas at the dog park.