How to Stop a Puppy from Biting: 3 Fast & Easy Steps

Jack Russel Mouthing

Learning how to stop a puppy from biting requires patience from both the owner and dog.

Speak to any dog owner who has had the pleasure of those puppy years and you will hear about how that lapse in attention resulted in a chewed leg chair or a demolished sandal.

Owners will say, “they’re just teething!” or “It’s just how they make sense of the world!”

In this article we will explore whether these owners are correct in what they say.

If you really want to understand why your puppy is biting, the different types of biting, and a full three step process on training your puppy not to bite then keep reading.

If you pay close attention to puppies playing, they use their mouths.

All the time.

There is a good reason for this, but to understand why, we must first look at their teeth in a little more detail.

Puppy Teeth 101

Jack Russel's Canine Teeth
At 4 weeks old you will be able to see the development of a puppy’s 4 canine teeth.

Puppies are born without teeth.

At 2-3 weeks old, a puppy’s milk teeth will start to come through.

These will be the incisors.

Puppies should have a total of 12 incisors, 6 on the top and 6 on the bottom of the mouth.

4 weeks will see the development of their 4 canine teeth; these are those sharp long teeth.

At any time between 3 and 6 weeks old, you should see them develop their pre-molars.

How Many Teeth Do Puppies Have?

By the time they reach 8 weeks old, your puppy should have a complete set of milk teeth. 28 in total:

  • 12 incisors
  • 4 canines
  • 12 pre-molars

14 in the upper jaw and 14 in the lower jaw.

Puppy Dental Anatomy
At 8 weeks old, your puppy should have a complete set of milk teeth.

What Age do Puppy Teeth Fall Out?

From 8-12 weeks onwards, your puppy should start losing their puppy teeth.

This is due to the adult teeth forming and pushing the milk teeth out.


You may find some around the house, but most puppies tend to swallow them.

This can be a pretty painful time for your pooch; we’ll explore how to make it a little more tolerable later on in this article.

This is a good time to see your veterinarian.

This is to ensure the your puppy’s adult teeth are forming properly (i.e. don’t have developmental tooth abnormalities) and also to check they have a normal bite.

The normal bite of a dog is termed a “scissor bite.”

This is because the upper incisors sit in front of the lower incisors when the mouth is closed.

However, it is common for short muzzled dogs to have a reverse scissor bite where the lower incisors sit in front of the upper incisors.

Most of their teeth will have fallen out by the time they are 6-8 months old and they should have a mouth full of adult teeth; 42 teeth in total.

  • 12 incisors
  • 4 canines
  • 16 pre-molars
  • 10 molars
Dog Dental Anatomy
A fully grown dog will have 42 teeth in total; that’s 14 more than a puppy. 4 extra pre-molars and
10 molars

You will notice that the molars are new.

Why Do Dogs Need Teeth?

Puppies don’t need molars, but mature dogs do for the following reasons:

  • Incisors are needed to rip meat and scrape it off bones
  • Canines are for puncturing prey
  • The molars are for grinding and crushing

With the extra teeth and the addition of those for grinding and crushing, it is possible to see why bite inhibition in puppies is so vital.

No one wants to be bitten by any of those teeth!

It’s not just the teeth that we should be worried out, it is also the strength of the jaw.

Thankfully, puppies have weak jaws.

They haven’t developed fully.

Jaw-adductor muscles generate the main biting force in dogs.

As puppies grow, these muscles get stronger. Bite force therefore increases.

Why Are Puppies Teeth So Sharp?

There are two reasons for this.

  1. To learn to become independent
  2. To learn bite inhibition

Anyone who has been nipped by a puppy will remember those pin prick teeth.

Consider the nursing Mother.

When those first sharp teeth start coming through, they will start to irritate the Mother making her reluctant to nurse and want to move away from her puppies, leaving them to search for alternative food sources.

This is when the weaning phase starts.

Those sharp teeth are the first step for those puppies becoming independent. They learn that they need to seek out other food sources. Their survival depends on it.

Sharp teeth don’t only irritate their Mother, they also annoy their siblings.

Which leads us into the other reason puppies bite and why you will constantly see puppies using their mouths whilst playing.

Puppy biting aids the learning of bite inhibition.

It is crucial that puppies learn bite inhibition, we discuss this in far more detail below.

So those sharp teeth kick start the weaning phase through their Mother’s reluctance to nurse and they also aid the learning of social etiquette.

How to Stop a Puppy from Biting in 3 Easy Steps

A Puppy Chewing on a Slipper
To quickly stop a puppy from bitting you must withdraw attention, provide positive reinforcement and provide alternatives.

Below are fast techniques to stop your puppy from biting.

  1. Withdraw attention – your puppy must learn that when they bite, the good thing goes away (see below on bite inhibition).
  2. Positive reinforcement – when your puppy is playing appropriately, play continues! Which is what they want!
  3. Provide alternatives – take the slipper off them and give them their own rope chew or toy. Encourage the behaviour you want to see!

Sometimes, stopping a puppy from biting, requires a greater understanding than the three bullet points above.

A puppy’s owner must understand bite inhibition, triggers and types of biting.

Then we share with you a training plan to prevent your puppy or mature dog from biting.

What is Bite Inhibition?

This is where a puppy will learn to limit the force and strength of their bite.

It teaches them that other dogs and humans are fragile.

A dog has one defence mechanism and that is to bite.

Every dog is capable of biting out of fear and anxiety, bite inhibition is a vital technique to limit the damage a dog can do.

English Bulldog Puppies Playing
Puppies play together by chewing and nipping.

When puppies are playing together; chewing and nipping, if they bite just a little too hard, those sharp teeth will hurt their sibling.

You will often hear a loud squeal or yelp.

This tells the offending puppy that it was a little too hard.

Play after this interaction will usually stop, so by trial and error, puppies learn that when they bite hard, play stops.


This is known as operant behavior; where your puppy’s behavior is being controlled or influenced by a consequence.

So we can see why learning bite inhibition at an early stage is important.

Dogs who learn how to use their mouth gently are less likely to bite hard or break skin if they do ever bite a person out of fear or anxiety.

But outside of mother and sibling interactions, how do we teach bite inhibition?

If your puppy nips or mouths at you during play, withdraw attention.

Turn away from them. Remember that trial and error, when I bite hard, the good thing goes away?

Whilst your puppy is playing appropriately, let play continue.

You want them to learn what behaviour is acceptable.

Puppy Chewing on a Teddy Bear

If your puppy is chewing on something they shouldn’t – usually whilst they are teething – provide alternatives such as:

  • Puppy safe chew toys
  • Puppy safe teething rings
  • Food stuffed chew toys
  • Puppy safe rope toys

This is reinforcing the behaviour you want them to demonstrate.

They can chew their own toys, just not your favourite pair of slippers!

What If I Rough Play With My Puppy or Play Tug of War?


A Puppy’s jaw muscles and teeth are not properly formed until they are matured; this can be from 6 – 24 months. Their teeth can easily be jarred or moved causing abnormalities.

If you have children, they are usually the ones who end up rough playing with your puppy.

The important thing with teaching bite inhibition is consistency.

Everyone in the family needs to be teaching the same thing.

Rough play is acceptable, as long as, the minute there is contact between human skin or clothing and your puppy’s mouth, play is stopped.

The same goes for tug.

You want your puppy to learn that lively and energetic play is acceptable, biting people or their clothing is not.

Trigger(s) Behind Puppy Biting

As much as we would like to think our puppies will run around the dog park, happily playing and chasing other dogs, puppies can develop aggressive tendencies.

When biting is accompanied by a fixed gaze, a stiff posture and deep tone growling it can be indicative of aggressive intent.

Aggression in puppies can be as a result of many things, they simply learn that aggression can solve problems for them.

Triggers of aggression in puppies can be from:

  • Frustration
  • Guarding behaviour
  • Anxiety
  • Lack of appropriate socialisation

Anxiety and frustration can be as a result of punishment.

Different Types of Biting

A puppy will display three or four different types of bite during their life.

Understanding the different types of bite, and how to identify them, is important so you understand what behavior you need to focus on during training.

Puppy biting can be:

  1. Exploration and Play
  2. Aggressive
  3. Guardian
  4. Teething

Your dog will display a different body language depending upon which bite they are using.

If you dog has a relaxed face during biting they are most likely exploring and playing.

Aggressive and guardian (i.e. territorial) dogs will have mouthing accompanied by a stiff body, wrinkled face or snarling (exposed teeth). This is usually indicative of building aggression and a bite could soon follow.

How to Train a Puppy Not to Bite

How to Train a Puppy Not to Bite

Now you understand a puppy’s jaw and teeth formation and the anatomy of their mouths, bite inhibition in young and old dogs and triggers behind bitting. It is time to train your puppy to stop biting.

Remember the fast three techniques earlier; withdraw attention, positive reinforcement and provide alternatives?

How do you actually do that?

Withdrawing attention is the easiest.

As soon as there is mouth contact to skin, withdraw attention.

Provide alternatives when necessary, such as chew toys or stuffed animals to carry.

It is possible to withdraw attention in the form of time out.

This should only be used with healthy and stable adult dogs, as using time out with anxious dogs and puppies can fuel separation anxiety.

Time out can be achieved by moving the dog to another room in the house, separated by baby gates or barriers.

Attention is withdrawn and with the removal of stimulus, the dog can calm down.

Positive reinforcement relies upon priase and encouragement.

When teaching bite inhibition in dogs it is important to avoid the use of punishment.

For example:

  • Holding mouths closed
  • Smacking or tapping them on the nose
  • Being yanked away with a leash
  • Shock collars

More Ways to Teach Your Puppy to Stop Biting

Quick tip to train the stop command.

Have your dog walk up to you, then throw treats towards him and behind him.

As he stops to eat the treats, shout stop.

He will associate the stopping with the command.

Repeat this exercise until he will stop on command before you have even thrown a treat.

You can then use this command during play when you feel a bite or nip on your skin.

How Do I Stop a Dog from Biting?

We’ve established that the hope would be to teach bite inhibition from an early stage.

This helps to avoid any difficulties as a dog gets older.

But what do we do when a fully grown dog is biting?

Firstly, if a dog is aggressively biting and causing harm, it is recommended to seek professional advice from a qualified behaviourist or trainer.

What we are discussing here is playful nipping behaviour and mouthing behaviour in grown dogs.


Certain herding breeds such as border collies and Australian cattle dogs will be more likely to nip at people’s feet and legs as this is historically what they would do to the animals they were herding.

  • Work on your dog’s attention and focus through positive reinforcement techniques. Work on command training including: sit, stay, leave/off and stop.
  • Ensure your dog is adequately exercised and stimulated – herding dogs get very bored!
  • Reinforce the behaviour you want to see and distract from the behaviour you don’t!
  • Withdraw attention when the nipping starts – stop moving!

Difference between Mouthing, Biting and Nipping

We’ve established that puppy biting, mouthing and nipping is a completely normal behaviour.

It is the first step in learning to be independent through the withdrawal of nursing mothers and also the first step in learning social etiquette when they bite their siblings just a little too hard.

Through these behaviours puppies learn bite inhibition, which is a vital skill as they get older.

They learn that other dogs and humans are fragile.

As owners, we need to continue to teach this bite inhibition even into adulthood if necessary, for the safety of other dogs and humans.

What is puppy nipping

Nipping is typically light nibbling between puppies during play and exploration, it is usually accompanied by an excited and happy puppy!

What is mouthing

Mouthing normally occurs during teething and can easily be spotted as your puppy will be gnawing.

What is biting

Biting is normally displayed by aggressive or territorial dogs who have not learned bite inhibition.


After reading this guide you should know exactly how to stop your puppy from biting.

Remember withdraw attention, positive reinforcement and provide alternatives whenever you feel their teeth on your skin.

You can achieve this by not playing with hands, stopping play immediately once bitten, prventing the use of loud noise, redirecting their attention (i.e. give them a toy), and timeout.

As always, if you are concerned about your dog’s behaviour, seek advice from a qualified behaviourist or trainer

About John Woods 299 Articles
John Woods is the founder of All Things Dogs, member of the Association of Professional Dog Trainers, graduate in Animal Behavior & Welfare and recognized author by the Dog Writers Association of America.


  1. We have a lab mix puppy (4 mos) who can be as gentle as a lamb. He was bell trained in two days to go out to the bathroom and all training has been with treats. When he has to poop, once he gets outside he often gets overly excited, runs and pulls on his leash and lunges at us biting and ripping at our clothes. Before doing this he rips up the grass in large chunks but doesn’t eat it.

    Other than this behavior, he is the perfect dog.

    Any suggestions on what’s going on and how we change that behavior.


    • Hi Jim,

      My advice would be to start with the lunging and ripping your clothes, this is common behavior for puppies during their first few walks, however, this shouldn’t be the case for a four month old puppy. Does your dog mouth you at home? Has he learnt to be soft with his mouth during play yet?

  2. I have a 4 month old mongrel puppy and it’s constantly biting at people. I’ve tried training it with the withdraw method and diverting attention but it seems like it’s not learning at all. When I withdraw attention, it seems like it gets more aggressive. Anything I can do?

    • Biting is a totally normal behaviour for puppies. They explore the world with their mouth. They also learned quite early on that biting or nipping often elicited play.

      So quite often, they are trying to get you to play. When you respond or become animated, their job is done – you are playing. Sometimes, when dogs are learning, they don’t understand when something that worked previously, isn’t any longer; so it can sometimes get worse before it gets better.

      Use tug toys to encourage play, ones long enough that the end touches the ground for you to animate, but your hands are well away.

      These toys that you use for tug should be hidden away when not in use, so they are novel and interesting when they come out. You can teach your puppy to drop.

      Stop animating the toy and throw a treat to the side – they will release the toy, to eat the treat. Label the behaviour and then go straight back into play.

      You want them to learn that dropping it makes the game start again. You would slowly increase the time between ending and re-starting play. When you hide the toy, you can label it finish or end. Anytime your pup tries to bite, ignore and re-direct to an appropriate chew toy, but rotate these chews/toys so they don’t become boring.

      Encourage tug play, on your terms. You can also use flirt poles to encourage play, but you are standing well away.

      You may also find that your puppy is more “bitey” at certain times of the day, so perhaps when people come home from school or work, or perhaps when they are tired. If you can figure out a pattern, you can avoid the interaction by asking them to calm or settle in their crate with a stuffed kong or frozen chew/carrot before they even get the chance to bite.

  3. My toy poodle is 6 months old. He snaps at me sometimes but last night he bit me drawing blood. I love him, and want to keep him, but I am 70 years old and am struggling. Please share some advice.

    • Hi Shirley,

      It would be helpful to know what is happening around the time you say he snaps? What is he doing, what are you doing?

      Have you noticed anything triggers the behavior? Also, how do you respond to his behavior? With him being so young there is certainly scope to manage this behavior.

      How long have you had him?

      If you could give us some more information that would certainly help us understand the situation? Alternatively, please seek the advice of a force-free trainer/behaviorist in your area

  4. I have two puppies. One is 13 weeks one is 8 months. They constantly bite and mouth each other. When I try to break it up the older one tries to bite me. What can I do?

    • Hi Christine, puppies explore the world with their mouth. It is a totally normal behavior. The issue is when two puppies are interacting for extended periods of time; they learn their play etiquette from each other, which may not always be appropriate. It’s like allowing two toddlers to learn how to behave the in sandpit without the guidance or suggestions of an adult. So, they need boundaries and supervision. Have a selection of toys; chew and play for them to interact with. Rotate boxes of toys so they don’t get bored. It’s also essential that they spend time apart, interacting with you and other members of the home, so they learn appropriate behavior. If they are becoming challenging, then separate them and play calming/focus games to help them return to a less stimulated baseline. To split them up, encourage them to make the decision to stop their interaction by making what you have to offer, more interesting; it sounds like this is more applicable to the older one.

  5. We recently adopted a pit mix puppy. She is doing great at everything except she nips your fingers pretty hard and sometimes draws blood when we give her treats or are training with treats.

    • Hi Beth, keep the treat inside a closed fist and only release the treat when your puppy is calm eating. If your puppy is too rough then close your fist again and wait for calm.

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