Puppies should be trained not to bite starting as early as 8 weeks old. This is an ideal time, although it also depends on the breed. Some breeds may require more consistent and patient training due to their energy levels or natural tendencies to mouth during play.

• Redirect Behavior: Offer chew toys or appropriate items when they try to bite, teaching them what’s okay to chew on.
• Teach Bite Inhibition: If your puppy bites too hard, let out a high-pitched yelp (similar to how puppies communicate with each other) and stop playing briefly. This helps them learn that biting ends the fun.
• Positive Reinforcement: Reward gentle behavior with treats, praise, or continued play to reinforce good habits.
• Set Boundaries Consistently: Ensure everyone interacting with the puppy responds the same way to biting to avoid mixed signals.
• Be Patient with Breed-Specific Traits: For instance, herding breeds may nip more due to instinct, while calmer breeds may learn faster.