Why Does My Puppy Bite Everything?

Not straight away.

Many owners try to stop all mouthing from day one, but puppies do need opportunities to learn how to use their mouths gently.

When puppies play with their littermates, they learn an important skill called bite inhibition. If one puppy bites too hard, the other puppy will often stop playing, move away, or give clear feedback that the bite was uncomfortable.

Over time, puppies learn how much pressure is acceptable during play.

This learning process is important because a dog that has learned to control the force of its mouth is far safer than a dog that has never developed that skill.

Puppies often become mouthier when they are:

• Overtired
• Overexcited
• Frustrated
• Overstimulated
• Struggling to regulate their emotions

Think of a toddler having a tantrum at the end of a busy day. They are not being naughty; they are simply finding it difficult to cope with their emotions.

Puppies can be exactly the same.

If your puppy suddenly turns into a piranha with a sugar high in the evening, it is often a sign that they need a nap, a calmer environment, or help settling rather than more activity.

The key is to give your puppy appropriate outlets while teaching them that human skin is not a chew toy.

Some helpful strategies include:

• Providing plenty of suitable chew items
• Redirecting onto a toy when play becomes too mouthy
• Taking short breaks from play if biting becomes too intense
• Rewarding calm behaviour
• Ensuring your puppy gets enough sleep and rest

Young puppies can sleep for 18-20 hours a day. Many biting problems are actually overtired puppy problems.

Sometimes owners feel they are making progress and then, seemingly overnight, the biting becomes more intense.

This can be completely normal.

Think about when your TV remote stops working. Most people don’t press the button once and immediately conclude the batteries are dead. We tend to press harder, press repeatedly, or try a few more times before giving up.

Dogs do the same thing. If a behaviour that has worked in the past suddenly stops working, they often try harder before they stop trying altogether. This temporary increase in the behaviour is called an extinction burst.

For example, if your puppy previously got attention by grabbing your sleeves and that behaviour no longer works, they may briefly try grabbing harder, more often, or for longer before the behaviour begins to fade.

Many owners mistakenly think their training is failing at this stage, when in reality it can be a sign that the puppy is learning that the old strategy no longer works.

Consistency is key.

Many owners are surprised when their teenage dog suddenly starts mouthing after months of improvement.

Adolescence can be a challenging time for dogs. Hormonal changes, increasing independence, excitement, frustration, and difficulty regulating emotions can all contribute to mouthing behaviours.

This does not mean your dog is trying to dominate you or challenge your authority.

More often, it means they are struggling to cope with big emotions.

We commonly see mouthing in teenage dogs when they become:

• Excited during play
• Frustrated on lead
• Overaroused around visitors
• Overstimulated in busy environments

In these situations, mouthing is often a sign that the dog needs help regulating their emotions rather than stricter punishment.

Adult dogs may occasionally mouth for many of the same reasons as puppies and adolescents.

Excitement, frustration, stress, uncertainty, and overstimulation can all contribute.

It is important to look at what is happening around the behaviour rather than focusing solely on the mouthing itself.

Ask yourself:

• What happened immediately beforehand?
• Is my dog excited, worried, frustrated, or overwhelmed?
• Is there a pattern to when this behaviour occurs?

Understanding the emotion behind the behaviour is often the first step to addressing it successfully.

There’s a common belief that puppies will just grow out of play biting. The reality is that puppies often grow into behaviours before they grow out of them. The behaviours that are practised and reinforced tend to stick around, which is why early guidance is so important.

While puppy biting can be frustrating, it is a normal and important part of development. The key is not to eliminate mouthing immediately, but to teach puppies how to use their mouths appropriately. With patience, consistency, and the right training, most puppies develop good bite inhibition and learn the skills needed to become well-mannered adult dogs.