Dog Puppy Behavior Training Help

Puppy Play Biting 7 Year Old Child – Training Forum

My 6 month-old Labrador retriever puppy, Katie, plays rough with my 7 year-old son and won’t stop play-biting. When she was younger, my son and Katie spent hours tumbling and playing, but now he’s afraid of her. He’s tried holding her muzzle shut, but she only gets more aggressive. The situation is getting worse. Now she nips at his clothes, jumps up and knocks him down. How can I teach my...