Sydney( Maltese /Australian terrier mix) loved to "play bite" as a pup , and she bite
hard and growled like a little killer ( Hence the name Syd Vicious
) I even went to my vet thinking I had a crazy dog !! Part of it is just puppy play , but when she got to hard I would squeal loud when she did it ( like another pup would) and ignore her for a bit. It took a while but she eventually stopped. Now she is the
sweetest dog on earth ( but she's keeping the name Syd Vicious , she has a rep to uphold
)