That's funny you say that, my Pom, Teddy was also banned from Petco a few months ago. He was only like 2-3 months at the time and he kept growling and biting them. They told me to neuter him and never breed him, that he's a result of bad breeding and a horrible dog. Well, Teddy's now about 7 months and he's just fine. I take all my pets to a different groomer now. I think he just didn't like Petco. haha