When Mocha was a puppy and started to bite, his trainer told me to say ouch in a high pitch voice like puppy. That's how they learn while playing with other puppies. Worked like a charm.
You can also pick up a piece do his skin at the back of his neck and shake left to right. Mommy dogs pick up puppies with their mouth at the back of neck and shake them gently when they misbehave. |