Top 7 Reasons Your Cat Bites You Unprovoked

Unprovoked cat bites are scary and can be dangerous, but knowing the reasons behind why they might happen is a great way to stay safe. 

Before we look at each, we want to remind you to be careful and take all cat bites seriously. Cat bites often get infected and require oral or IV antibiotics, and sometimes even surgery.

If your cat is biting you without any apparent reason, there may be an underlying issue that needs to be addressed. Here are the top 7 reasons your cat may be biting you unprovoked:

1. Redirected Aggression

Redirected aggression is when a cat takes their aggression out on someone other than the cause of their frustration. 

The complicated piece of it is that it can happen long after the actual incident, which can make it difficult to determine their trigger. One of the most common triggers is cats they see outside because they can’t physically reach them. A cat can turn on any other animals or humans in the home. 

If your cat is triggered by anything outdoors, try to block their access so they can’t see what upsets them. 

Redirected aggression can also occur because one cat is triggered by another in a multi-cat household. Your best bet in this scenario is to separate the cats and do a slow reintroduction.

cat and water fountain
Image from​​ KittySpout

2. Overstimulation

Overstimulation in cats isn’t fully understood, but we know it’s real. It occurs during play, usually with humans or other cats and sometimes with objects. It also occurs during affection. There are several possible reasons for it.

During play, a cat often does exactly what they would do if they were hunting. They stalk, pounce, catch and kill prey, and similar behaviors are seen during playtime.

Since hunting leaves the cat with a big reward or a lot of frustration (when the prey gets away), it’s possible the brain goes into overdrive, making the cat super excited (like we are when something cool or annoying happens). 

Since play is similar, the same thing could be happening. Once you notice your cat might be getting overstimulated, it’s best to distract them by throwing a toy or turning on an automatic toy and walking away. 

You can use a blanket or towel to break up any fights for cats that get overstimulated playing with other cats. Never try to break up a fight with your hands.

Petting presents other possibilities for overstimulation. Typically a cat gets overstimulated when they’re pet head to tail over and over again. This could also cause the brain to get excited from the stimulation, and their energy is too high, resulting in a nip or bite. 

Another possibility is they’re giving us a small cue that they want us to stop, and we don’t notice it, and it ends in a bite. 

Try to pet your cat in short stints, stick to the head, and only pet from head to tail a few times and stop.

Filtration system
Image from Kittyspout​​

3. Playfulness

Biting is often part of playtime. Cats will bite toy mice, streamers, kicker toys, and fluffy balls, the same way they would bite prey. 

When a cat is playing, it’s best to keep your limbs away from them and leave a distance so they bite their toys and not you. 

Kittens are famous for wrestling hands and nibbling them. It’s cute when they’re small, but a problem when they're big, which is why it’s recommended not to play with them using your hands.

Filtration system
Image from Kittyspout​​

4. Scared or Startled

When a cat is scared or startled , they might bite to defend themselves or make what’s scaring them go away. 

Most cats want to avoid confrontation, so warning swats and bites are used. If they are startled, it’s just like us—they might react excessively and bite. 

The best thing to do is avoid a cat when they are scared or right after they’re startled to protect yourself. This will give them time to assess the situation and hopefully relax.

Filtration system
Image from Kittyspout​​

5. Attention

One thing that gets our attention is when cats do something they shouldn’t. If you aren’t careful, this could become a habit. 

Sometimes a cat will rub against you for attention. You don’t respond. Then they bat at you. You don’t respond. It’s not hard to imagine that some cats nip or bite because nothing else worked.

To prevent your cat from biting, make sure you’re playing with them every day and giving them plenty of attention. For cats that want attention but are easily overstimulated, just pet two to three times and stop.

Cat playing with water fountain
I​​mage from kittyspout

6. Pain

When a cat has a sudden change in personality, pain is one of the most likely culprits. A super sweet cat in pain can turn on a dime if they’re in pain. 

Cats are masters of disguise because they need to hide any weakness in the wild. Although it’s difficult to tell if a cat’s in pain, your observation skills may pick up on something that’s out of the norm.

Watch how your cat walks—if they are less active or have a different gait, they might be in pain. 

Look for changes in bathroom and eating habits, which could indicate a digestive issue or even dental disease. And monitor how they act during petting: 

Do they seem fine then react when you’re near a certain spot on their body? Are they an older cat? It’s possible they have joint pain.

Even if you don’t notice anything but your cat seems to lash out, you’ll want to talk to your vet and voice your concerns.

Cat playing with water fountain
I​​mage from kittyspout

7. Lacks Proper Human Social Skills

Kittens have certain periods of critical development, and one of them is regarding socialization. Early socialization is around 3-7 weeks, and late socialization is until 16 weeks. 

In addition to interacting with littermates and moms, this is the time when kittens should be exposed to people. 

Kittens taken from their mother and/or littermates may not properly be socialized. Sometimes they grow up lacking necessary boundaries with other cats, especially if they were only around humans as a kitten.

Likewise, kittens without early human interaction may be fearful of humans, or treat humans like their feline counterparts.

If a cat is an adult, it will be harder to socialize them with humans, but it can be done in some cases. It’s important you set up boundaries and have playtime with your cat that involves maintaining space. Wand toys and automatic toys are great tools for this.

Cat playing with water fountain
I​​mage from kittyspout


It's important to remember that cat bites can be dangerous and can transmit diseases, so it's important to address the issue as soon as possible. If your cat is biting you unprovoked, it's best to consult a veterinarian or a professional animal behaviorist to determine the cause and find an appropriate solution.


What Your Cat Needs