If your hands and sleeves are covered in little teeth marks, welcome to puppyhood. Mouthing and nipping are completely normal, how puppies explore the world and play, and not a sign of aggression. It still hurts, and you do want to channel it. The methods that work are gentle and consistent, and they fit within the first six months.
Why puppies bite
Puppies investigate everything with their mouths, they teethe, and they play with their littermates using their teeth. When they come to us, we simply become the new playmates, so the mouthing transfers to our hands. Understanding that this is normal, not bad behavior, keeps you patient and points you to the right response.
What actually works
A few consistent habits make a real difference:
- Redirect to a toy. Keep appropriate chews handy and offer one when the teeth come out, so your puppy learns what is fine to bite.
- Reward gentle mouths and calm. Use a clear marker to catch the moments your puppy is soft or chooses not to bite, then reward.
- End play when teeth get sharp. A brief, calm pause, standing up and disengaging for a few seconds, teaches that hard biting ends the fun. No drama, no scolding.
- Manage arousal. Much biting is an overtired or over-excited puppy who has tipped over the edge.
Mind the rest and the routine
This is the part people miss: a huge amount of biting is simply an exhausted puppy. Overtired puppies get frantic and nippy, much like overtired toddlers. Protecting naps with a comfortable crate and the predictable rhythm you built in your puppy’s first week prevents a lot of the worst biting before it starts. When the mouthing spikes, ask first whether your puppy needs a nap.
Keep sessions short and calm
Practice your redirections in brief, low-key moments rather than long, exciting sessions, the same way we recommend in how long training sessions should be. Build the habit so it holds up around distractions, and aim for a puppy who responds to you out of habit, not only when a treat is visible, as in training without visible treats.
What to avoid
Skip anything that uses pain or fear, holding the muzzle shut, yelping aggressively, or “alpha” nonsense. These can frighten a puppy, damage trust, and sometimes make biting worse. And remember that constant nipping can be a sign your puppy is under-rested or under-stimulated, so look at the whole picture, including whether they are getting enough calm downtime and not being left to fuss the way we warn against in preventing separation problems. With patience, mouthing fades as your puppy grows. If it suddenly spikes, treat it like any setback: look for the cause, often an overtired puppy, and adjust.
