Looking for tips or someone that does obedience classes with dogs. I have a 2 year old pug chi that can be a little bugger. He barks like crazy when ppl come over, he gets nippy with small kids so I have to kennel him when kids are here. Basically anyone that doesn't come to my house on a regular basis he will bite them. How can I get him not to do this. I also have a baby Boston terrier and I don't want her to follow what he does. Any help please.