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 Misbehaving? 8 Vet-Reviewed Reasons

owner petting a hissing angry tabby cat

Cat behavior can often seem like a mystery. Cats experience a range of emotions that can influence their behavior. It seems that they can feel, for example, anger, stress, fear, and sadness ,which may understandably affect how they behave and interact with us.

A cat perceived as misbehaving might just be behaving like a cat. Cats that seem to behave “bad” or annoying could be displaying instinctual cat behaviors or could be suffering from an illness or a behavioral problem rooted in a poorly enriched or an unpredictable environment.

Before you think that what your cat needs is to be punished or reprimanded for their behavior, it’s important to understand the possible reasons behind it. This allows you to find the best ways to address this behavior and understand your feline better.

divider cat paw scratch oct 2024

The 8 Possible Reasons for Misbehavior in Cats

1.  Stress or Anxiety

Stress could cause your cat to behave differently. Cats can feel stressed for various reasons, such as from a minor situation or exposure to long-term stressors.

An unpredictable environment and major household or routine changes can make your cat “act out” for a period of time. Other stressors, such as loud noises, fireworks, or thunderstorms, might have an effect on them for a few minutes or hours until they recover.

Cats that suffer from stress might start urine spraying, scratching furniture, or hiding more often. These stress-related behaviors need to be addressed promptly together with the root of the problem.

Stress is not good for anyone, so keeping your cat as stress-free as possible is important for their health and well-being.

If your pet is showing signs of stress or anxiety, we suggest you speak to a vet.

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


2. Fear

Cats can feel fear, which manifest as the following, amongst others:

  • Changes in mood
  • Restlessness
  • Appetite changes
  • Excessive grooming
  • Hypervigilance
  • Tail flicking
  • Trying to escape or hide

An anxious and fearful cat is not going to behave normally. You can expect noticeable changes in their mood and behavior, such as food refusal, hiding, or restlessness. They might be jumpy and prefer to hide than play or roam the house like they used to. Cats can become anxious or fearful for several reasons. These reasons are usually related to trauma, illness, pain, and improper socialization.

Your cat could have gotten a major fright that has caused them to become fearful. Perhaps a neighbor got a new dog that scared them, or fireworks went off. Also, what might seem like something silly to us, might seem significant and scary for your cat hence their anxiety and fear.


3. Redirected Aggression

Redirected aggression is defined as aggression that was meant to be directed to another animal, person, or stimuli but the cat is unable to. They redirect their aggression towards other pets or animals because they cannot take it out on the source. For example, your cat could have seen another cat outside that got in their territory. Your cat could not get outside because the window was closed, making them agitated.

When you go to interact with your cat in this agitated state, they might start biting or scratching you for no apparent reason. This aggression was not meant for you, but rather for the other cat outside.

Various situations can cause your cat to redirect their aggression. You should try to pay attention to their environment and what they were previously doing to understand if their misbehavior could be redirected to aggression.

aggressive cat
Image Credit: pixbull, Shutterstock

4. Medical Issues

When a cat is not feeling good, whether it is from an illness or pain, their behavior could reflect it. Cats generally hide signs of illness or pain well to avoid appearing vulnerable, so changes in their behavior should be taken seriously.

Sometimes their pain or illness is not detectable to you, which is why they need to be checked by a veterinarian. What you might deem as your cat misbehaving could be just a sign that something is not right.

An example would be a cat that is not using their litter box properly and urinates next to it or somewhere else. This could be because your cat is having trouble jumping into the litter box because of a painful condition like arthritis or because they have cystitis. Aside from physical illness or pain, cognitive-related issues can cause changes in your cat’s behavior too.


5. Poorly Enriched Environment

Cats’ level of well-being is dependent on their environmental comfort. Cats need a safe place to hide and rest and enough resources (food and water bowls, litter boxes, scratching posts, and toys). They need all these to engage their natural behaviors.

A cat whose environmental needs are not met might become destructive or have sudden bursts of energy that can become disruptive in the home. They might start playing with your shoelaces or scratching your furniture because they have no appropriate toys to direct the behavior to. You should speak to your vet to get a better understanding of your cat’s specific environmental needs if they are showing this type of behavior.

Sick sad cat lying on the bed
Image Credit: Zhuravlev Andrey, Shutterstock

6. Litter Box Troubles

Cats can be finicky about their litter box, whether it’s the design, location, litter type, or cleanliness. Other factors, such as mobility issues and the presence of other cats, can also cause your cat to change their litter box habits. Cats that are not happy with their litter box generally start doing their bathroom business outside of it.

If you notice changes in your cat’s litter box habits, you should schedule an appointment with a veterinarian first to rule out potential medical issues. The veterinarian can also help you determine why your cat has litter box troubles once medical issues have been ruled out. Perhaps the litter box is too small, or the design is uncomfortable for your cat. Otherwise, something as simple as a dirty litter box could be to blame.


7. Hormones

It is normal for unneutered or unspayed cats to display unwanted behaviors because of sex hormones. This is why the seemingly playful and cuddly kitten you brought home starts showing unwanted behavior once sexually mature. These unwanted behaviors typically begin when your cat is about four to six months old.

Hormonal behaviors in male and female cats can range from urine spraying to increased roaming, vocalizing, and aggression. They may have a strong urge to escape the home and become vocal and destructive when they cannot get out. Their urine spraying can leave nasty smells and stains on your furniture and become a pain to clean.

If this is the case, you should speak with a veterinarian about managing their hormones and look into getting them neutered or spayed.

tabby cat spraying outdoors to mark territory
Image Credit: Helen Liam, Shutterstock

8. Territorial Behavior

Cats are territorial by nature, and when other cats are introduced to their territory, they may show signs of territorial aggression, urine spraying, or scent-marking. Cats may urine spray on various surfaces to mark their territory. Although the behavior is undesirable to us, it communicates territory to other cats.

Furthermore, cats will rub their scent glands located on their head, paws, and rectum to transfer pheromones and scent marks. If you have a multi-cat household or have neighborhood cats that wander into your garden, your cat could display territorial aggression.

Some cats are protective over their claimed people or items, so it’s not uncommon for them to fight over them. Most cats are not welcoming of roaming cats in their gardens or homes and become aggressive to defend their territory.

divider cat paw scratch oct 2024

Conclusion

There are many possible reasons why your cat might change their behavior and appear as misbehaving. Most of the reasons indicate an underlying issue that needs to be addressed, such as pain or stress. Helping your cat overcome the underlying issue with the assistance of your veterinarian can help identify the reason and correct misbehavior.

You should never ignore sudden behavior changes in cats, especially if they include signs of illness and pain.

See also:


Featured Image Credit: AnnaKraynova, 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

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

Surgical Admit Appointments & Day-Of Electives: A Cat Owner’s Manual

Hi, I’m Dr. Lauren! Read my introduction to learn more about me and my two adventurous cats, Pancake and Tiller. Surgery of one’s...

Can Dogs Smell Cats? Canine Senses Explained (Vet-Verified)

Dogs have a very keen sense of smell. Therefore, it makes sense that dogs would be able to detect the scent of cats...

Why Is My Cat Over-Grooming? 5 Vet-Reviewed Reasons

It’s completely natural and healthy for cats to groom themselves and each other, but if your cat starts overgrooming, there may be a...

Can Cats Eat Asparagus? Vet-Reviewed Nutrition and Safety Explained

While you might love asparagus in risotto or as a side for your steak, should you be offering any leftover asparagus to your...

More related

How Does Dust-Free Cat Litter Work? Types, Pros, Cons & FAQ (Vet-Reviewed)

As a cat parent, you know the importance of finding high-quality, absorbent cat litter. However, not only do you have to be happy...

Is My Cat Being Constipated an Emergency? (Vet Answer)

No one likes to be constipated, especially not our feline friends who make a comfortable career in whichever way they choose. Unlike a...

We Chat With Chris Poole, Filmmaker Behind the Cat Video Stars Cole and Marmalade

Chris Poole is the human “servant” behind Cole and Marmalade, two cats who’ve gained quite a following from videos on their YouTube video...

My Cat Smells Like Death: 5 Reasons & What to Do (Vet Answer)

Saying that something smells like death can mean different things to different people, but it’s usually just a creative, if dark, way of...

Keep reading

How to Calm a Cat During Thunderstorms: 16 Vet-Reviewed Methods

Some cats could care less about thunderstorms, while others are scared and anxious. If your cat doesn’t feel comfortable around loud and unpredictable noises, they may hide or even try to escape your home as the storm begins, which could...

cat scared of thunder

How Much Does It Cost to Microchip a Cat? (2025 Update)

Few things in this world can make you feel as scared and helpless as realizing that your cat has gotten lost. Sadly, many cats that go missing are never found, and they either end up dying on the streets or...

microchipping cat

Can Cats Have Autism? Vet-Verified Facts & Science

One of the things that we love most about our cats is how much like us they often are. Whether it’s the need for affection and companionship or a deep desire to play, cats and humans have much in common....

cat playing alone

How to Train a Cat to Stay Indoors: 7 Vet-Approved Tips

Of the over 160 million cats in the United States, roughly 30—80 million are unowned and roaming free1. Many cats with owners also live outdoors, at least part of the time. Outdoor cats pose a risk to wildlife and are...

cute cat rearing up licking finger of the woman kneeling on the floor

How Do Cats Play with Humans? Vet-Reviewed Feline Behavior

Watching two cats play together can be a ton of fun because of the spirited and silly antics they get up to. However, these playful actions often don’t carry over to playtime with humans. It can be difficult to determine...

cat playing with owner

Cat Strokes: Signs, Causes, Diagnosis, Care & FAQ (Vet Answer)

Although relatively rare, cats experience strokes. A stroke occurs when there is an abrupt interruption in the blood supply to your cat’s brain. It can be very frightening if your cat experiences a stroke, and it is essential to take...

vet examining the sick cat with stethoscope

Does Salt Kill Fleas on Cats? Vet Reviewed Effectiveness & Safety

A flea infestation can really ruin your week. Not only are fleas a nuisance for your cat, but they can also be a nightmare to get rid of in your home. There are plenty of products to treat flea infestations,...

Salt

15 Hazards That Could Hurt or Kill Your Cat & How to Avoid Them (Vet Reviewed)

When you are at home relaxing with your cat, you might be totally oblivious to all the hazards around the home. After all, we don’t foresee some events, making it difficult to navigate. While we could go on for hours...

vet wrapping cat's injured paw with bandage