Why is My Cat Biting other Cats Neck? (7 Reason) in 2024

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Cat fights can happen when my feline buddy regularly hangs out with other cats. It might not be an everyday thing, but witnessing such behavior and any resulting injuries can be pretty scary for me as a pet parent!

What’s even more concerning is when my furry friend keeps showing aggressive actions, like biting. I might have seen my cat biting another cat’s neck and wondered why this is happening.

Neck biting can become quite common if I have more than one cat, and the constant worry that they might harm each other is not a pleasant feeling.

Even though my cat is usually friendly, she has shown this aggressive side in the past. Should I be concerned about it?

There are many reasons why my furry pal might regularly bite another cat’s neck, but the good news is not all of them are harmful.

In this article, I’ll talk about the top reasons behind this behavior and whether I should try to stop it in the future. I’ll also share five ways to reduce aggressive biting in my cat. Keep reading to get all the info you need!

Play Fighting

Having fun with play is something kittens do a lot—it’s one of their favorite things! While it’s adorable most of the time, this play can resemble hunting behaviors like pouncing, clawing, stalking, jumping, and, yes, biting.

When my feline friends play fights, they’re essentially practicing the skills they would have needed to survive in the wild when they grew up.

Usually, my furry buddy will grow out of this as they get older, but sometimes, especially if they grow up together, they might keep doing it.

If my cat doesn’t seem seriously mad at the other cat and it’s more like a playful tussle, there’s no need to worry—it’s just play fighting.

But if my kitty is getting a bit too aggressive and maybe even causing some bleeding, that’s a reason to be concerned. It’s probably not play anymore, and one of the other reasons in this list might be what’s going on.

Cat Biting other Cats Neck in Play time

Mating Behavior

Mating behavior in cats can be quite aggressive, unlike what we experience as humans. When my male cat is in heat, he actively seeks out a female to mate with.

During the mating process, the female cat may become very noisy and attempt to escape or attack the male because mating can be uncomfortable for her.

To protect himself, my male cat bites the female’s neck; it helps keep her in place and makes her naturally stay still. Mating behavior is usually observed between a male and female, and it’s more likely if my male cat is not neutered.

However, these behaviors can sometimes occur even after a cat has been neutered and can involve cats of the same sex.

If I suspect that my cat is biting due to mating behavior, I might be wondering, “When is it too late to neuter a cat?”. The good news is, the surgery can be done at any age, as long as my kitty is healthy.

Unfortunately, neutering doesn’t always guarantee that my cat will stop biting, as some neutered males may bite other cats out of frustration from not being able to mate anymore.

If you’re interested in learning more about cat behaviors related to mating, check out our article on can cats share a litter box.

Cat Bit to other Cats Neck in mating behavior

Establishing Dominance

I’ve noticed that cats really care about who’s in charge at home. They like to be the boss of their space and use certain actions to show they’re in control.

Understanding behaviors like why some cats sleep with their mouth open can provide additional insights into their dynamics.

For example, when I introduce my cats, it’s normal for them to hiss – it’s like a warning to say, “Hey, I’m here, don’t come too close.” This also happens when one of my cats doesn’t recognize another, especially after a vet visit due to the strange smell.

If a new cat has come into my home or if one of my cats has been somewhere new, the other might bite their neck to say, “I’m the boss here.”

They choose the neck because it’s easy to get to and fits with a cat’s natural hunting instincts.

Dominant behaviors are often seen between two male cats who don’t know each other. But even cats that are familiar might still want to show who’s boss.

As long as my cats don’t seem to be in pain, this kind of biting isn’t really something to worry about. But I should keep an eye out in case my dominant cat is being a bully, as that might lead to a catfight later on.

Cat Bit to other cat has come into my home


Have you ever been petting your cat, and all of a sudden, they give you a tiny bite, even though they were just purring moments ago?

This has happened to me before, and I used to wonder why my cat would suddenly attack me. But the truth is, it’s not really an attack—it’s just that my cat is feeling overwhelmed.

You see, overstimulation occurs when we pet our cats for too long. That little bite is their way of saying, “Hey, I’ve had enough, I need some space,” rather than them deciding to attack us out of the blue.

Usually, it’s just a gentle nip, nothing serious to worry about. Sometimes, my cat might even show this behavior toward another cat. It often happens during grooming; if the cat doing the grooming goes on for too long, my cat might give them a little nip on the neck to say, “Okay, that’s too much, I’m done.”

Cat Bit to other Cats Neck in Overstimulation behavior

Grooming Behavior

When cats live together, they often help each other by grooming. Unfortunately, this grooming behavior can sometimes involve biting from both the one being groomed (as mentioned earlier) and me doing the grooming.

Chewing on dirty patches of fur is a common way for cats to clean themselves and others. It might be that the cat being groomed simply has a big patch of dirt on its neck that my kitty is trying to get rid of.

Alternatively, my cat might be telling the other cat to stay still—this is a method used by mothers when grooming their kittens and may be instinctively used on other cats too.

As long as one of the cats doesn’t seem to be in pain, this biting isn’t something to worry about. Actually, the fact that my furry friends are grooming each other suggests that they care about each other! They’re taking care of one another and showing affection.

Cat Bit to other Cats Neck in grooming behavior

Health Concerns

There’s a chance my cat’s neck biting is related to a health issue. My furry friend might be acting aggressively towards another cat because of pain or as a way to warn them away when she’s not feeling well.

Another sign that my kitty is uncomfortable is unexpected hissing. For instance, my cat suddenly started hissing at me, and later I found out she was dealing with arthritis.

Cats sometimes become more aggressive to protect themselves when they’re not feeling their best. Medical conditions like hormonal imbalances, hyperthyroidism, cognitive dysfunction, and rabies can make my cat act more aggressively.

If I suspect my kitty may have a health problem, I’ll make sure to take her to the vet as soon as possible so she can receive the necessary treatment.

If you’re concerned about your cat’s health, you might want to read our article on my cat leaking poop everywhere for more information.

Cat Bit to other Cats Neck in health concern

Dealing with Aggression

Many times, your cat might act aggressively toward another cat when they feel scared, especially if they can’t get away from what’s scaring them.

A lack of socialization or being punished by another cat can both make your cat scared and act aggressively.

Even a one-time scary experience, like a catfight with a stranger, can trigger this response. Your kitty will bite and attack the other cat to defend themselves from what they see as a threat.

If my furry friend always bites another cat’s neck when they’re scared and also shows other signs of fear, like flattened ears and crouching, it’s probably fear aggression.

This can hurt the cat being attacked, so it’s important to try and stop this behavior. I can try introducing my cat slowly to the scary situation over time so they can learn it’s not a threat.

cat  act aggressively toward another cat when they feel scared

Stopping Aggressive Biting

If my furry friend seems to be too aggressive when biting another cat, it’s crucial for me to try and put a stop to it to avoid injury to the attacked cat.

Here are five simple ways that might help decrease this aggressive biting. If I’m unsure, I should consider consulting my vet, as they might suggest other solutions like neutering.


My cat might be more aggressive if they haven’t properly socialized. To address this, I can create positive interactions by encouraging my cat to explore the scents of other cats.

Gradually introducing them to new feline friends can help them feel more comfortable in social situations.

Gradually introducing them to new feline friends can help them feel more comfortable in social situations.

Separate Resources:

Sharing resources can lead to tension and aggression. To prevent conflicts, I should ensure each cat has their own bowls, beds, toys, and litterboxes.

Creating designated “safe zones” for each cat can also minimize fear-driven aggression and provide a retreat when needed.

Provide Stimulation:

Boredom can contribute to unwanted behaviors, including biting. To keep my cat entertained, I can offer a variety of toys and provide a cat tree for climbing and scratching.

Engaging activities will allow them to expend energy and practice hunting behaviors without directing it towards housemates.

Two cats play with toys

Slow Introductions:

Cats are territorial, and introducing a new cat can lead to aggression. Taking a gradual approach by keeping the cats in separate areas of the home initially and allowing them to get used to each other’s scents before direct interaction can ease the transition and reduce aggressive responses.

No Punishment:

Punishing aggressive behavior can worsen the situation. Instead, I should focus on rewarding positive behaviors. Offering treats or affection when my cat behaves well around other cats will reinforce good habits and contribute to a more positive environment for everyone.

Owner love with cat

Frequently Asked Questions

Why do cats bite each other’s necks?

Cats bite each other’s necks for various reasons, including play, communication, asserting dominance, and mating behaviors. It’s a natural part of feline behavior and can serve different purposes.

Is neck biting harmful to cats?

Not necessarily. While it can look alarming, not all neck biting leads to harm. In some cases, it’s a form of play or communication. However, if the biting becomes aggressive and causes injuries, it’s essential to address the underlying issues.

Should I be concerned if my cats engage in neck biting?

It depends on the context. If it’s part of normal play or communication and doesn’t result in harm, there’s usually no cause for concern. However, if the biting becomes aggressive or repetitive, it’s advisable to observe and understand the reasons behind the behavior.

How can I stop aggressive biting between my cats?

To reduce aggressive biting, consider strategies such as proper socialization, providing separate resources, offering stimulation through toys, slow introductions when introducing new cats, and avoiding punishment while rewarding positive behaviors.


In conclusion, cats biting each other’s necks is a common behavior with various underlying reasons. Whether it’s play, communication, asserting dominance, or mating behaviors, it’s essential for cat owners to observe and understand the context of such behavior.

While not all neck biting is harmful, addressing aggression and ensuring a positive environment through proper socialization and enriachment can contribute to a harmonious feline household.

If concerns persist, consulting with a veterinarian is recommended to rule out any underlying health issues and receive tailored advice for managing cat behavior.

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