Why Does My Cat Bite Me?

Why does my cat bite me? Cornell, Merck and the ASPCA describe several kinds of aggression behind cat bites: rough play, petting that goes on too long, fear, frustration redirected at the nearest person, and pain or illness.

Play and petting bites come with warning signs, which Cornell and the ASPCA both describe. Knowing which kind of bite you're getting tells you what the sources suggest doing about it.

Cornell also notes that diseases can cause aggression, so a cat who starts biting out of character is worth a vet visit first.

Why does my kitten bite my hands and feet?

The ASPCA calls play aggression the most common type of aggression cats direct at their owners. It says it is mostly seen in kittens and cats under two years old.

Here's the part that surprises people. Cornell's Feline Health Center explains that kittens learn to soften their bites (bite inhibition) from their littermates, and kittens raised without littermates may miss that lesson.

The ASPCA adds that orphaned kittens, and kittens weaned early, may never have learned to soften their play.

The ASPCA describes how play aggression looks: the stalking crouch, the twitching tail and the pounce, the same moves a cat uses to hunt.

What the sources suggest

• Use a wand toy. Cornell advises keeping any toy used to distract a cat at a distance from your hands, so the cat cannot bite or scratch you.
• Rotate toys. Merck's veterinary manual suggests rotating several toys your cat likes.
• If teeth meet skin, walk away. Cornell explains that walking away and ignoring a cat during play aggression may teach him that rough play results in no play at all.

If your kitten is also using her claws on the furniture, our guide on how to stop a kitten scratching furniture covers where to send them.

Why does my cat bite me when I pet her?

She was purring a moment ago, and now she's bitten you. This has a name: petting-induced aggression.

Cornell describes it as overstimulation. Merck adds that these cats may have a lower tolerance for contact, and that some bite to avoid being touched while resting, sleeping or eating.

There are warning signs. The ASPCA lists the ones to watch for:

• quickly turning her head toward your hand
• twitching or flipping her tail
• flattening her ears, or rotating them forward and back
• restlessness
• pupils getting larger

The ASPCA advises stopping petting when you see any of these. Cornell suggests that rewarding a cat with food for allowing brief, light stroking without signs of aggression may also help.

Where do cats like to be petted?

A 2021 study in Frontiers in Veterinary Science tested petting guidelines on 100 cats. The guidelines say to touch mainly the base of the ears and the cheeks, and that some cats also like the chin.

They advise avoiding the belly and the base of the tail, and taking care with the back, sides, legs and tail. Offer your hand, let the cat come to you, and let her walk away if she wants.

The guidelines also suggest pausing every 3 to 5 seconds to see whether she rubs against you for more.

In that study, signs of aggression appeared in 27% of cats before people learned the guidelines, and in 16% after. The cats also showed more friendly (affiliative) behavior.

Why did my cat suddenly bite me for no reason?

The ASPCA describes redirected aggression: a cat is upset by something she can't reach and lashes out at whoever is close instead. It notes the delay can stretch to hours, which can make a bite seem unprovoked.

Cornell names the common triggers: loud noises, seeing an outdoor or stray cat through a window, or an altercation with another cat. Merck describes a cat who sees a cat outdoors and then attacks the cat beside her instead.

The ASPCA calls redirected aggression probably the most dangerous kind of cat aggression. It advises never approaching an agitated cat, and never trying to break up a cat fight with your hands.

When the trigger is a cat outside, Cornell suggests pulling down a window shade and using deterrents to keep stray cats away.

Could fear, pain or illness be the reason?

Cornell describes the look of a fearful cat: ears flattened and held outward, whiskers flattened or pressed down onto the face, and tail wrapped closely or tucked under the body.

For fear, Cornell recommends gradual desensitization: brief exposure to what scares her, built up slowly, with food rewards.

Cornell, Merck and the ASPCA all describe pain-related aggression. Cornell gives an example: cats with osteoarthritis may resent having their joints touched and may hiss, bite or scratch in response.

Cornell also notes that diseases such as hyperthyroidism, osteoarthritis, dental disease and central nervous system problems may cause aggression. It advises ruling out medical problems before starting a behavior plan.

Ask your vet to check your cat if:

• she has started biting out of character, since Cornell notes disease may cause aggression
• she bites when you touch one particular spot, which Cornell links to pain such as sore joints
• she bites hard enough to break the skin (talk to your own doctor about the bite as well)

Should I punish my cat for biting?

Cornell warns that any type of physical punishment can increase a cat's fear or anxiety and worsen aggression.

Merck says punishment can make a cat afraid of you, and at best it only works while you're in the room.

Comforting a cat mid-bite can backfire too. Cornell notes that consoling an aggressive cat may reward the behavior.

The alternatives the sources give are low-key: stop petting at the first warning sign (ASPCA), walk away from rough play (Cornell), and come back later with a toy kept away from your hands (Cornell).

To see what a contented cat looks like, our guide to signs of happiness in cats walks through it.

Questions new cat parents ask

Why does my cat bite me gently?

The ASPCA's petting warning signs are worth watching for: a twitching tail, flattening or rotating ears, and larger pupils. If they appear, the ASPCA advises stopping petting.

Why does my cat bite me at night?

The ASPCA describes play aggression as stalking and pouncing, the moves of hunting. Ask your vet whether a play session with a wand toy, kept away from your hands, would suit your cat before bed.

Will my kitten grow out of biting?

The ASPCA notes play aggression is most common under two years old. Cornell explains kittens learn bite inhibition from littermates, and advises keeping toys at a distance from your hands.

Does getting a second cat help?

Ask your vet whether a playmate would suit your cat. It's a big decision, and the introduction matters. Our guide on how to introduce cats walks through it step by step.

When should I get help?

Cornell advises ruling out medical problems first, so if biting is frequent, hard or getting worse, start with your vet. They can check for medical causes and may refer you to a veterinary behaviorist.

Sources

• Cornell Feline Health Center: Feline Behavior Problems: Aggression
• ASPCA: Aggression in Cats
• Merck Veterinary Manual: Behavior Problems in Cats
• Haywood C, et al. Providing Humans With Practical, Best Practice Handling Guidelines During Human-Cat Interactions Increases Cats' Affiliative Behaviour and Reduces Aggression and Signs of Conflict. Frontiers in Veterinary Science, 2021

This article is for general information and is not veterinary advice. Talk to your vet about your own cat — they know the animal in front of them.

Choolip products are food supplements, not medicine. They are not intended to diagnose or manage any medical condition. If your cat has been diagnosed with a condition, their diet should be set by your vet.