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Animiyo
Puppies, kittens and growth9 min readUpdated on August 5, 2026

Teething and mouthing in the puppy: a phase, not a vice

The stages of teething, why a puppy needs to mouth, what to offer and what to keep away, and which dental signals to take to the vet.

Audience
Pet owners
Species
Dog, Cat
Scope
Valid everywhere

In the first weeks in a new home, few things test patience like a puppy that mouths everything: hands, furniture, shoes, cables. The instinctive reaction is to read it as a whim to correct, and the mistake starts right there. Mouthing, for a puppy and in a different way for a kitten too, is not a vice but normal behaviour that goes with development, and in particular with the growth and replacement of teeth. Suppressing it without offering an alternative does not work, because the need remains and finds an outlet anyway. Understanding what happens in the puppy's mouth as it grows lets you tell what is physiological from what should be shown to the vet, and redirect biting onto suitable objects instead of fighting it. This article describes the stages of teething in broad terms, without rigid dates because they vary from one animal to another, and explains how to manage mouthing so it becomes part of education rather than a daily war.

The stages of teething in broad terms

Teething is not a single event but a path that starts with the first milk teeth and reaches the permanent set. The exact timing varies with species, size and the individual animal, so the ages should be taken as a general reference and not as a schedule to meet to the day. What matters is recognising the sequence, because it is the same for everyone even when the dates differ.

The teething milestones as a general reference
StageWhat happensWhat to watch
Milk teeth appearThe first sharp little teeth come through in the early weeksGum discomfort and the first need to bite
Full milk dentitionThe puppy has its set of temporary teethFrequent biting in play and during exploration
Milk teeth fall outThe temporary teeth loosen and dropSmall traces of blood, teeth found or swallowed harmlessly
Permanent teeth eruptThe adult teeth replace the temporary onesMore need to mouth and sensitive gums
Full permanent dentitionThe adult mouth is formedGrowth mouthing eases, the need to chew remains

Why a puppy needs to mouth

Mouthing meets several needs at once, which is why saying no is not enough. During teething, pressure on the gums relieves the discomfort of moving teeth. Beyond pain, the mouth is for the puppy a tool of learning: it explores textures and objects by biting them, as a small child would with its hands. Add play, which in young animals often runs through the bite.

  • Relief from gum discomfort while teeth move and are replaced.
  • Exploring the world through the mouth, which in the puppy is an organ of learning.
  • Play and interaction, which in young animals naturally include biting.
  • Releasing energy and tension, above all when the puppy is tired or overexcited.
  • Seeking attention, when biting a hand gets an immediate reaction from the person.

Recognising which need is driving the bite at that moment changes the right response. An overexcited, tired puppy does not need another game but calm and rest; a puppy that is exploring needs suitable objects to bite; a puppy seeking attention learns faster when biting a hand stops working as a call. Telling them apart is more useful than suppressing.

What to offer and what to keep away

Giving the need to bite an outlet means providing suitable objects and removing dangerous ones. The choice is not trivial: some objects that are too hard can damage the teeth, others too small or that flake off can be swallowed. The prudent rule is to prefer objects made for the purpose and to supervise their use, above all at first, asking the vet for advice in doubtful cases.

  • Objects to bite suited to size and age, large enough not to be swallowed.
  • Materials that give a little under the bite, avoiding those so hard they risk chipping teeth.
  • Rotating the objects, because novelty keeps interest up and keeps the puppy away from furniture and hands.
  • Electrical cables, small objects, fraying fabrics and toys that break into pieces must be kept out of reach.
  • Care with thread, elastic and ribbon, which if swallowed can form a dangerous linear foreign body.
  • Periodic checking of the bite objects, replacing worn ones that could shed pieces.

Redirecting the bite and teaching restraint

The aim is not to eliminate biting, which is natural, but to move it from objects and people to what is suitable, and to teach the puppy to control its force. This is built with consistency and coherent reactions, not with punishment, which frightens without teaching the alternative. The underlying rule is simple: hands are not a toy, and each time the bite lands on them the game stops.

  1. Always keep a suitable object within reach

    When the puppy tries to bite a hand or a piece of furniture, offer the right object at once. Swapping the target is more effective than merely preventing the bite.

  2. Stop the game when the bite lands on skin

    Calmly pause the interaction for a moment. The puppy learns that biting hands ends the game rather than making it more exciting.

  3. Do not use hands as a toy

    Playing at having your fingers bitten teaches the puppy that hands are for biting. Better to always place an object between hand and teeth.

  4. Reward teeth on the right thing

    When the puppy mouths the suitable object, a calm reinforcement cements the correct choice far more than telling it off for the mistake.

  5. Manage tiredness and overexcitement

    A puppy that bites more when tired needs a break and rest, not more play. Offering calm switches off many bites better than any correction.

  6. Be consistent across the whole family

    If one person stops the game at a bite and another keeps letting their hands be bitten, the puppy does not learn. The rules apply to everyone the same way.

With a kitten the reasoning is similar but play with hands must be avoided even more firmly, because a bite aimed at skin tends to become fixed. In both species patience pays: growth mouthing eases as teething completes, while the need to chew appropriately remains for life and should be met with suitable objects.

Which dental signals to take to the vet

Teething is a physiological process that in most cases proceeds without trouble, but some signals deserve the vet's eye. Recognising them is not a substitute for the visit, which accompanies growth through the first year anyway, but a way not to let pass situations that, if ignored, can create problems for the adult mouth.

  • A milk tooth that stays in place when the matching permanent one has already come through beside it.
  • Permanent teeth that do not appear in the expected time or that look poorly aligned.
  • Very red or swollen gums, persistent bleeding or markedly bad breath.
  • Refusing food, difficulty chewing or signs of pain when the mouth is touched.
  • A chipped or broken tooth, which should be assessed because it can be painful and become infected.
  • Chewing always on one side only, or objects dropped repeatedly during play.

Noting when these signals appear and bringing them to a check lets the vet assess the mouth at the right time, when treatment is simpler. The permanent dentition will be with the animal for life, and the habits set in the first months, from the right objects to bite to attention for the mouth, are the basis of future dental health.

Frequently asked questions

My puppy bites everything: am I doing something wrong?
Almost certainly not. Mouthing is normal puppy behaviour, tied to teething, to exploring the world with the mouth and to play. The mistake is not that the puppy bites, but suppressing the bite without offering an alternative: the need remains and finds an outlet elsewhere. The approach that works is to always keep a suitable object within reach to offer instead of a hand or furniture, to stop the game when the bite lands on skin, and to manage tiredness, which often increases biting.
I found one of my puppy's little teeth: is that normal?
Yes, milk teeth falling out is part of teething. You may find a little tooth, notice small traces of blood on the gums or on bite objects, or have the puppy swallow a milk tooth without harm. It is a physiological process. What should instead be reported to the vet is a milk tooth that stays in place when the permanent one has already come through beside it, because a double row of teeth can create problems and needs assessing.
Which bite objects are safest for a puppy?
Prefer objects made for the purpose, suited to size and age, large enough not to be swallowed and not so hard they risk chipping teeth. Avoid objects that flake into pieces, thread, elastic and ribbon that if swallowed form a dangerous foreign body, and small household items. Supervise use above all at first, check the condition of the objects periodically and, when in doubt about hardness or suitability, ask the vet for advice.
My kitten bites my hands during play: what should I do?
With a kitten it is even more important never to use hands as a toy, because a bite aimed at skin tends to become a habit that is hard to undo. Always place an object between hand and teeth, calmly stop the game when the bite lands on you, and reward correct play on the object. Consistency across the whole family is decisive: if one person lets their hands be bitten, the kitten does not understand why it cannot with another.

What to do next

Treat a puppy's mouthing as a growth phase, not a vice: work out which need is driving it and always offer a suitable object instead of hands and furniture, stopping the game when the bite lands on skin. Choose safe objects, neither too hard nor swallowable, keep cables and thread out of reach, and take to the vet any milk teeth that do not fall out, broken teeth or signs of mouth pain.

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Teething and mouthing in the puppy: a phase, not a vice · Animiyo