I dont know much about this topic. But i can relate. My yorkie shows teeth around puppies. When he is around a grown dog (no matter what size) he is great. It usually takes him a little while to warm up to a puppy. I think it might be a dominance thing? Your yorkie just may be having a hard time accepting the fact that he doesnt "rule the house" anymore. Eventually he will cave. Reward the good behavior and never coddle him when he is acting aggressive. Good luck with the new puppy! |