We need to stop this! The problem is that Snowball is 8 years old and is the sweetest dog you ever saw! EVERYONE loves him and that is the problem. Sometimes they will try to pet him and he is OK. At other times he is still nice and adorable but when a person gets too close he will bark and go to bite or nip. We have no idea why he does this often but not always. Is there any way to stop this? We do need to do something!