My Shih Tzu bites people, mostly children that come over to see my children. I am scared to answer the door if there's a child on the other end, he will probably bite. He has bitten my sons friends, not hard, but not playing either. Some children he is ok with, others, no. We have not figured out which ones he does not like. We can try to spray him with water, but I do not want him to bite at all. I put him in the garage now when children come over, but is there anything else I can do?
Angel