Get

In Your Inbox

Catster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Why Is My Cat Hissing at Me All of a Sudden? 4 Vet-Reviewed Reasons

Scottish fold cat very angry and aggressive

A cat usually hisses when they feel uncomfortable or threatened by something in their environment, either another cat, another animal, or even a human. Yes, it can even be their owner! But an occasional snub isn’t the same as your cat suddenly hissing at you whenever they see you, especially if they’re typically affectionate and cuddly.

Fortunately, this behavior is often caused by environmental, social, or physical factors, not a newfound disdain for you. But to solve the problem, you must figure out why your cat is hissing at you in the first place. Let’s dive in to see what vets say are the most common reasons that a cat might start hissing at their owner.

divider 3 paws

The 4 Reasons Your Cat Might Be Hissing at You Suddenly

1. Fear

A cat hisses usually as a reaction to an immediate situation. If your cat is suddenly hissing at you, they might feel fear about something in the environment, a change in your physical appearance, or your movements. Are you wearing a new hat? Are you moving differently? It is important to analyze what could potentially be causing your cat to feel afraid and to give the cat some space.

At this point, a cat might try to retrieve and hide but will potentially bite or snap in defense as a form of fear-induced aggression. It is best to retreat a step or two, discreetly observe the cat, and wait for them to calm down.

angry cat hissing
Image Credit: Fang_Y_M , Pixabay

2. Need for Space

Cats can also hiss at each other or toward other creatures in an attempt to establish boundaries and let the other one know it is time to back up.

If a cat has hissed at you, it is better to leave them alone and provide space. Discreetly observe your cat from a distance to try to examine their behavior and if there is something specific in the environment that is scaring them. During this time, avoid speaking or interacting with your cat. You should keep in mind that it is safer to leave the cat alone, but whenever this is not possible, protection such as a thick towel must be used to carefully handle the cat.


3. Introduction of a New Person or Animal

If you’ve just gotten a new cat, moved your spouse in, or even just had a friend over a few too many times for your cat’s comfort, they might start hissing at you. Whenever you are adding to the social environment of your cat, it is important to do gradual introductions and analyze the situation. If you can relate the sudden behavior of your cat hissing with bringing a new cat or person into their environment, it is time to make a physical separation for a while.

Once your cat has time to decompress, you can start to gradually introduce the two subjects. Short and positive introductions using food or treats as a reward for calm behavior and gradual approximations usually do the trick. A hissing and scared cat is not in a good mental state, so you, as the guardian and caretaker, should give your cat the time and experience they need to have a positive association with any addition to their social environment. If you would still experience issues with your cat, it is recommended to consult a veterinarian about training options.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's an online service where you can talk to a vet online and get the advice you need for your pet — all at an affordable price!

PangoVet_Mention-in-Content for PangoVet2 save money


4. Pain

The smoking gun for this one is whether your cat hisses at you all the time or only when you touch them in certain places or try to pick them up. If it’s the latter, your cat may be in pain. After all, touching a wounded body part rarely feels good.

Cats are exceptional at hiding their signs of illnesses. This biological drive protects them from opportunistic predators that might want to turn them into a tasty, easy-to-capture meal. While an indoor cat don’t suffer those same risks, they still have the biological drive to hide signs of illnesses. Your cat may not be forthcoming about their illness or injury and may only react when you touch them and make them hurt.

If you suspect that pain is the cause of your cat suddenly hissing at you, please visit the veterinarian soon. Since cats usually hide their pain and discomfort, by the time you notice that something is wrong, it is usually something that needs attention. Do not waste valuable time waiting to see if it passes.

Abyssinian cat hisses
Image Credit: Slava Dumchev, Shutterstock

divider 3 paws

Final Thoughts

It’s scary when our pets start acting out of the ordinary. Thankfully, this problem is typically resolvable without medical attention. The stressful lives led by cats worldwide cause most cases of atypical hissing.

However, if your cat only hisses when you touch them (not before you try, only once you come into physical contact), you’ll want to take your cat to the vet, since this is a sign that your cat is in pain and might need medical attention.


Featured Image Credit By: Anatoliy Cherkas, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything cat

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.




How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Catster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

2 Responses

  1. what about u get an adopted cat as I did had him almost 2 weeks. 1st few days he was hiding. but occasionally he let's me pet him and he would squirm around..act lovely and all.. but still remain hidden.. now recently he has hissed.. I figured he wanted space but still hissing. but what is weird if I slowly reach him, and start petting him, he is all playful and loving. then few hours later, he hisses again.. per kennel, he is healthy and gotten his shots.. am I doing something wrong or is it just the shy stage of new environment?

    1. Hi Daniel, thank you very much for sharing your story and for adopting a cat. Two weeks seems too short for your cat some will take longer to build trust, especially if they have a difficult background. Since the kennel confirmed that the cat is healthy, you should give him some time and continue working on building a trust-based relationship with him. Respecting their space is a great option at this point as making sure he feels safe is a must. If your problem persists, consider a video call with pangovet.com for additional and personalized advice.

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.


Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

Cat’s Life Saved Twice: Garbanzo Gets a New Lease on Life (with Video)

Every now and then, you come across a story that hits you right in the feels, and this week, that story is all...

Himalayan Cat Breed: Info, Pictures, Temperament & More

If you’re looking for the ultimate cuddle companion, the beautiful and gentle Himalayan cat might be the new friend for you. With their...

Can Cats Eat Applesauce? Vet-Reviewed Facts & Considerations

Applesauce is considered safe for kids and adults, but is applesauce safe for cats? The short answer is that while it is safe...

When Do Kittens Calm Down and Begin to Mature? FAQ & Tips

Kittens can be downright crazy, and any cat lover knows it is true, regardless of how cute their little faces are. It seems...

More related

How to Remove Candle Wax From Cat Fur: Vet-Approved Step-by-Step Guide

It’s a known fact that cats are experts at getting into all sorts of trouble. Some experiences are funny and cute, while others...

Why Is My Cat Suddenly Sleeping in Odd Places: 7 Vet-Verified Reasons

Did you know cats can sleep between 12 and 18 hours daily? It’s true, and studies suggest that almost 40% of cats will...

Why Do Cats Like the Sun? 6 Reasons & Safety Tips

One of the funniest and quite fascinating habits of cats is their love of sunbathing. It is a great sight to see cats...

Cat Bunting: What Is It? Vet Approved Feline Behavior Guide

Cats are curious creatures that have many behaviors that we must study to understand, as they are not natural human ones. One such...

Keep reading

Why Does My Cat Play With Poop? 6 Possible Vet-Reviewed Reasons for This Behavior

Typically, cats are very clean animals. They groom themselves regularly and they have quite specific demands when it comes to litter trays. Despite this, cats can develop some odd habits that seem dirty to us humans. One such habit is...

cat pooping in the litter box

How Do Cats Ask for Help? Vet-Verified Signs to Look For

Anyone who has ever lived with a cat has probably wondered more than once what their buddy was trying to tell them. Cats meow, stare, and even paw at us to get our attention, but is there a way to...

white cat distracting owner from work

Why Do Cats Sit on Squares, Even If It’s Just Tape? 8 Vet-Reviewed Reasons

For some odd reason, cats seem to enjoy sitting on squares. They’ll even sit on pieces of tape that look like tiny squares, which can be quite comical. But why do cats love sitting on squares so much? Here are...

Cat inside a square made of tape

Do Cats Attack Chickens? Can They Coexist? Vet-Reviewed Precautions

If you have a cat but are considering adding chickens to your household, you’re likely pondering the wisdom of that move. After all, cats are predators, this is a hard-wired instinct and many will attack the chickens even if they...

cat looking at a chicken

5 Potential Hairball Cat Food Side Effects: Vet-Reviewed Considerations & Tips

Most cats get hairballs. If you’re a cat parent, you know this is a fact you can’t get away from. Whether you have a long-haired cat or a short-haired cat, chances are your cat will experience hairballs at some point...

Yawning, choking, coughing Cat close up

Why Does My Cat Bite My Ear? 10 Vet-Verified Reasons

Cats have long intrigued us with strange behaviors. One of the more unusual and often perplexing behaviors that some cats exhibit is the act of biting their owner’s ears. While cats are known for their enigmatic nature and instinctive habits,...

cat on woman's shoulder by head bite hair

Cat Pheromones for Aggression: Vet Approved Facts & FAQ

If you have the time, space, and financial ability, there are many benefits to owning more than one cat. The kitties can keep each other company when you’re away, play together, and help each other exercise. However, not all adult...

Angry,Calico,Cat,Lying,On,Edge,Of,Bed,Wagging,Tail

How to Tell If a Cat Is in Heat: 6 Vet-Verified Signs to Look For

We love our cats, but if you own an unspayed female cat, as soon as she’s old enough, she will go into heat and you will surely notice some quite evident changes in her. These hormonal changes begin around 4.5...

abyssinian-cat-meowing-at-the-sofa

Love Cats? So Do We! Join the Catster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.




Sign up for the Catster Email Newsletter

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.