When you play with your puppy, let him mouth on your hands. Continue play until he bites especially hard. When he 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 him to stop mouthing you, at least momentarily.
Why is my puppy biting me aggressively?
The puppy has become aggressive about biting, especially if the bites break the skin and cause bleeding; it's a sign the dog is trying to be dominant. You need to immediately take action when a puppy won't stop biting and can't be distracted by treats or commands.
Why is my puppy constantly trying to bite me?
this is perfectly normal puppy behavior, driven by primitive instincts to get feedback on their mouths. They may jump at you, they try to entice you to play and they seek attention by biting at your hands, your clothes, your shoes.
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