Puppy biting is the most common complaint from new puppy owners — and the behaviour that causes the most frustration, pain, and sometimes genuine distress. The good news: puppy biting is completely normal, serves important developmental purposes, and with consistent handling, resolves in virtually all cases. The bad news: there is no instant fix. This guide covers why puppies bite, the teething timeline, how to teach bite inhibition, and realistic expectations for when it stops.
Why Puppies Bite
- Exploration: Puppies explore the world with their mouths — everything goes in, including your hands
- Teething: Baby teeth are being replaced by adult teeth. Chewing relieves gum discomfort
- Play: Puppies play with their littermates by biting. They haven’t yet learned that human skin is more sensitive
- Overtiredness: An exhausted puppy becomes hyperactive, unfocused, and bitey — the “witching hour” is real
- Over-excitement: High arousal = less impulse control = more biting
Teething Timeline
| Age | What Happens |
|---|---|
| 3–6 weeks | Baby teeth (deciduous) erupt — 28 razor-sharp teeth |
| 3–4 months | Baby teeth begin falling out |
| 4–6 months | Adult teeth erupt — 42 teeth in total. Peak discomfort and chewing |
| 6–7 months | All adult teeth should be in place. Chewing intensity reduces |
| 7–12 months | Residual chewing as teeth settle. Biting behaviour should be minimal |
Teaching Bite Inhibition — The Essential Skill
Bite inhibition is not about stopping your puppy from ever putting their mouth on you — it’s about teaching them to control the pressure of their bite. This is a critical life skill: a dog with good bite inhibition, if ever startled or frightened enough to snap, will deliver a soft inhibited bite rather than a damaging one.
The protocol
- When your puppy bites hard: Let out a sharp, short “OUCH!” — not a scream, just a clear signal
- Immediately withdraw attention: Turn away, stand up, or leave the room for 15–20 seconds
- Return and resume play calmly. If they bite hard again, repeat. Be consistent
- Gradually raise the threshold: Initially only react to hard bites. Over time, react to medium bites. Eventually, any tooth-on-skin contact leads to play stopping
- Reward gentle mouthing: When your puppy licks or mouths gently, praise and continue play
Redirecting
- Always have an appropriate chew toy within reach. When puppy targets your hand, redirect to the toy
- Frozen Kongs, cold carrots, and ice cubes soothe teething gums
- Never use your hands as toys. No rough wrestling with hands — this teaches that hands are for biting
The Overtired Puppy Problem
The single biggest cause of excessive biting that owners miss: the puppy is overtired. An 8-week-old puppy needs 18–20 hours of sleep per day. If your puppy has been awake for more than 45 minutes to 1 hour, they are likely overtired. Enforce a nap in the crate. The biting almost always stops after sleep.
What NOT To Do
- ❌ Never hit, tap, or physically punish a biting puppy — this creates fear and can lead to genuine aggression
- ❌ Never clamp their mouth shut — frightening and counterproductive
- ❌ Never spray water or use aversives — damages trust
- ❌ Never shout or scream — your puppy thinks you’re playing a louder, more exciting game
FAQs
When does puppy biting actually stop?
With consistent bite inhibition training: most puppies significantly reduce biting between 5 and 6 months as adult teeth settle. By 7–8 months, most puppies have moved past the biting phase entirely. Some breeds (terriers, herding breeds) may take a little longer. If your puppy is still biting aggressively after 8 months with consistent training, consult a qualified positive-reinforcement dog behaviourist — not the internet.