Why Does My Cat Bite Me? 6 Reasons and How to Stop It

Most cats bite their owners for one of six reasons: play that has turned into hunting practice, too much stroking, affection that gets a bit toothy, fear, pain, or frustration about something else that gets taken out on you. Nearly all of it is communication. Your cat is telling you to stop, to play, or that something hurts. Once you know which bite you are dealing with, you can usually stop it within a few weeks.

Why do cats bite their owners? Six reasons

The table gives a quick overview. Below it, each type of bite is explained with what you can do about it.

Type of bite	What it looks like	What helps
Play biting	Stalking, pouncing on hands or ankles, grabbing your arm and kicking with the back legs	Wand toys, daily play sessions, hands never used as toys
Overstimulation	Enjoys being stroked, then suddenly turns and bites	Shorter sessions, stop at the first tail flick
Love bites	Gentle nibbles, often mixed with licking or kneading	Move your hand away calmly before it escalates
Fear	Crouched, ears flat, hissing, bites when cornered	Give space and a way out, let the cat approach you
Pain	Bites when a certain spot is touched, or a calm cat becomes snappy	Vet check
Redirected aggression	Bites you right after seeing another cat outside or hearing a loud noise	Leave the cat alone to calm down, remove the trigger

1. Play biting: hunting practice on the wrong target

Cats are built to stalk, pounce and bite. If there is no toy moving around, a hand under the duvet or an ankle walking past is the next best thing. Grabbing your arm with the front paws and kicking with the back legs (the "bunny kick") is a classic move cats use on prey.

This is the most common reason young cats bite. The Cornell Feline Health Center notes that play aggression is often seen in kittens and young cats that grew up without littermates or had little chance to play. Indoor cats with lots of energy and not much to do are also more prone to it. Some cats get extra rowdy after catnip, so if the biting happens mostly then, read what catnip does to cats.

2. Overstimulation: "my cat bites me when I stroke it"

Your cat climbs on your lap, purrs, enjoys a fuss and then suddenly turns and bites your hand. Vets call this petting-induced aggression. Nobody knows exactly why it happens. The leading explanations are that repeated stroking builds up arousal until it tips over, or that the cat simply wants to decide when the stroking stops.

Every cat has its own limit. Some love ten minutes, others have had enough after five strokes. The belly, the base of the tail and the back legs are sensitive areas for most cats. A cat lying on its back is usually showing trust, and it is rarely an invitation to rub its tummy.

Handling can trigger the same reaction. Brushing, picking up and nail trimming are typical moments for a bite. If trimming is the problem, our guide to cat nail clippers and how to use them safely explains how to make it quicker and calmer for both of you.

3. Love bites and grooming nips

Some cats lick you, then give a gentle nibble, then lick again. Cats groom each other this way, with small bites to work through the fur. A soft love bite that does not hurt is usually affection or an invitation to play. If the nibbles get harder, your cat is moving into overstimulation and it is time to take your hand away calmly.

Cats Protection points out that licking followed by biting usually means your cat is getting overstimulated or wants to play. Licking on its own is a separate subject: read why your cat licks you for the full story.

4. Fear: biting as a last resort

A frightened cat would rather run than fight. It bites when it feels trapped: picked up against its will, cornered behind the sofa or approached by a visitor it does not know. Warning signs are a low, crouched body, ears flat to the side, whiskers pressed back, a tucked tail, hissing and spitting.

Rescue cats and cats that were not handled gently as kittens are more likely to bite out of fear. They need time, hiding places and people who let them make the first move.

5. Pain or illness

A cat in pain may bite when you touch a sore spot or simply when you come close. The Cornell Feline Health Center names osteoarthritis, dental disease, an overactive thyroid (hyperthyroidism) and neurological problems as medical causes of aggression. Arthritis is very common in older cats and easy to miss, because cats hide pain well.

If your cat bites when you touch one particular place, or if a friendly cat has become snappy, see your vet before you start any training. Our overview of cat diseases and their symptoms can help you spot other signs.

6. Redirected aggression: you were just in the way

Your cat sees a strange cat in the garden, hears a loud bang or gets into a scuffle with another cat in the house. It is worked up and cannot reach the cause, so it bites the nearest thing. That can be you. These bites often feel completely out of the blue, because you did not see the trigger.

Leave a cat in this state alone until it has calmed down, which can take a while. Closing the curtains or blinds where a neighbourhood cat shows up often helps. Never put your hands between two fighting cats. If the tension is between cats in your own home, our guide on how to introduce cats covers how to separate and reintroduce them.

"My cat randomly bites me": is it really random?

Almost never. Bites that seem random usually fall into one of three groups:

• Ambush play. Your cat lies in wait under the bed or behind a door and launches at your ankles. Bored indoor cats do this most, often in the evening or early morning when they are most active.
• Missed warning signs. During stroking, the build-up can be subtle. A twitching tail tip or skin rippling on the back is easy to overlook.
• A trigger you did not notice. A cat outside the window or a noise in another room can lead to a redirected bite.

If none of these fit, and the biting is new, think of pain first.

The warning signs before a bite

Most cats warn you before they bite. Learn these signals and you will avoid most bites:

• Tail flicking, thumping or lashing from side to side
• Skin twitching or rippling along the back
• Ears turning sideways or flattening backwards
• Pupils suddenly getting large
• Head turning quickly towards your hand
• The body going stiff, or purring that stops abruptly
• A low growl, a hiss or a paw raised towards you

A relaxed cat has upright ears, normal-sized pupils, soft whiskers and a still tail. As soon as you see the first sign, stop what you are doing and let your cat walk away.

How to stop a cat from biting

Keep your hands out of play

This is the most important rule. Every time your hands or feet are used as toys, your cat learns that skin is prey. International Cat Care advises keeping all body parts out of play, so that hands are linked with stroking and food instead of hunting.

A wand toy (a stick with a string and a feather or fabric toy on the end) is the best tool for this. It lets your cat stalk, chase and bite with your hand at a safe distance. Move it like prey: across the floor, around a corner, out of sight. Let your cat catch it regularly, otherwise it gets frustrated. Put wand toys away after playing, because cats can swallow string.

Play every day, and finish with food

Two or three short sessions of 10 to 15 minutes a day burn off the energy that would otherwise go into your ankles. End each session with a final "catch" and a meal or a treat, which mirrors the natural rhythm of hunt, catch, eat. Your cat then settles down to groom and sleep. For times when you are not around, a few toys your cat can bat around alone help. Small play mice from our cat toys range are a good example. Rotate toys every few days so they stay interesting.

When the bite comes: freeze, then walk away

• Go still. Pulling your hand away fast makes it move like prey and makes the bite worse. If your cat is holding on, push your hand gently towards the mouth instead of pulling. Most cats then let go.
• End the game. Calmly stand up and walk away, or leave the room for a few minutes. Your cat learns that biting makes the fun stop.
• Redirect. Once things have calmed down, offer a wand toy or kicker toy to bite.

Never punish a bite

Shouting, tapping the nose, spraying water or pushing your cat away all make biting worse. The Cornell Feline Health Center warns that physical punishment increases fear and aggression. A cat may also read your reaction as part of the game. Punishment also damages trust, which makes fear biting more likely.

Stroke the way your cat likes it

• Let your cat come to you, and let it walk away when it wants.
• Stick to the head, cheeks and under the chin. Most cats prefer these areas.
• Keep sessions short and stop before the first warning sign. Then build up slowly.
• Reward calm, short stroking with a treat. Our guide to healthy cat treats explains which ones to use and how many.

Be consistent, everyone in the house

If one person plays rough with their hands and everyone else does not, your cat will keep testing. Agree on the same rules for the whole household. Children often miss the warning signs, so supervise them with the cat and teach them to stroke gently and stop when the tail starts to flick. Our guide to cats and children has more on this.

Help a fearful cat feel safe

Give your cat high, quiet places to retreat to, and separate food, water, litter tray and scratching post from busy areas or other cats. Do not pick it up or corner it. Sit quietly and let it approach you, and reward every calm contact.

When to call in a professional

If your cat bites hard and often, or the biting gets worse despite all of this, start with a vet check. Your vet can then refer you to a qualified behaviourist. In the UK, the Animal Behaviour and Training Council (ABTC) keeps a register of qualified behaviourists.

Kittens that bite

Kittens bite. It is how they play and learn. They normally learn bite control from their mother and littermates: bite too hard and the game stops. A kitten that left its litter early, or grew up alone, often never learned that lesson.

Cats Protection explains that kittens who play with fingers and toes during the socialisation period (roughly two to seven weeks old) learn that hands are toys. A nip from a 10-week-old kitten is cute. The same habit in a five-kilo adult cat is not. So start with the rules above from the very first day: wand toys, no hands, no punishment, and walk away when the teeth come out. Most kittens grow out of hard play biting if you stay consistent.

Sudden biting: see the vet first

If a cat that never used to bite starts doing so, treat it as a health question before a behaviour question. Pain from arthritis, a sore tooth, an ear infection or an injury, or an overactive thyroid can all make a cat irritable and quick to bite.

Book a vet appointment soon if the biting comes with other changes, such as hiding, eating less, limping, avoiding jumps, grooming less or not using the litter tray. Contact your vet the same day if your cat bites when you touch a particular spot and seems to be in obvious pain.

Your cat bit you: what to do

Take cat bites seriously, even small ones. A cat's long, sharp teeth push bacteria deep under the skin, and the small puncture wound closes over quickly, trapping them inside. The most common culprit is Pasteurella multocida, a bacterium found in the mouths of most healthy cats. In a Mayo Clinic study of people bitten on the hand, about one in three ended up being admitted to hospital.

First aid straight away

The NHS advises the following for animal bites:

1. Clean the wound right away with soap and warm running water.
2. If it is not bleeding, gently squeeze it so it bleeds a little. If it is bleeding heavily, press a clean cloth or dry dressing firmly on it.
3. Pat it dry and cover it with a clean dressing.
4. Paracetamol or ibuprofen can help with pain and swelling (no aspirin for children under 16).

When to get medical help

See a doctor the same day if a cat bite has broken the skin. In the UK, NICE guidance tells doctors to offer antibiotics when a cat bite has broken the skin and drawn blood, and to consider them when the skin is broken and the wound could be deep. You can call or go online to NHS 111. Outside the UK, contact your GP, family doctor or an urgent care clinic.

The NHS says to get help through 111 in particular if:

• the bite is on your hand, foot, face or head
• the bite is hot, swollen, red or more painful, leaks fluid or smells unpleasant
• you have a high temperature or feel hot, cold or shivery
• you think there may be teeth, hair or dirt in the wound
• you have not had a tetanus vaccine in the last 10 years

Go to A&E if the wound is large or deep, or if you cannot stop the bleeding. Bites near a joint or on the hand deserve extra care, because infection there can spread to tendons and joints. If you were bitten abroad by a cat you do not know, get medical advice the same day, because a doctor will need to assess the risk of rabies.

Frequently asked questions