When you play with your pup, let her mouth on your hands. Continue play until she bites hard. When she does, immediately give a high-pitched yelp, as if you’re hurt, and let your hand go limp. This should startle your puppy and cause her to stop mouthing you . Praise your puppy for stopping or for licking you. Resume whatever you were doing before. If your pup bites you hard again, yelp again. Repeat these steps no more than three times within a 15-minute period. If you find that yelping alone doesn’t work, you can switch to a time-out . When your puppy delivers a hard bite, yelp loudly. Then