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

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

Cat Screaming: Sounds & Why They Do It (Vet Approved)

Cats are expert communicators who use various methods, including body language and vocalizations, to get their points across. Cats can produce a stunning...

Why Does My Cat Smell Like Rotten Eggs? Our Vet Discusses Reasons & Tips

It’s important to pay attention to any unusual odors coming from your pet. If your cat smells like sulfur or rotten eggs, it’s...

Can Cats Eat Mackerel? Precautions & Advice

If you have cats and opened a can of mackerel around them, they have probably started meowing like crazy, trying to get you...

10 Best Ringworm Shampoos for Cats in 2025: Reviews & Top Picks

Ringworm is an annoying fungal infection that our cats may develop from time to time, and even worse, it can spread to us....

More related

Why Is My Kitten Not Eating? 8 Vet Reviewed Possible Reasons

It’s always exciting to get a new kitten. By nature, kittens are playful, inquisitive, and somewhat fussy creatures with an independent streak that...

How to Make Cat Toys Out of Socks: 7 Steps & Safety Tips

With all the creative minds on the Internet, we never run out of DIY projects to create. We can make so many things...

How Do Cats Give Birth? (Vet Approved Pregnancy & Labor Facts)

It can come as a surprise to find out your cat is pregnant; most likely, you thought she’d only put on a bit...

Does a Sphynx Need Sunscreen? 8 Summer Safety Tips (Vet-Reviewed)

Sphynx cats are loveable for far more reasons than their unusual appearance, but their lack of hair does provide major appeal for many...

Keep reading

Made by Nacho Cat Food Review 2025: Recalls, Pros & Cons

Review Summary Made by Nacho is a love letter from celebrity chef Bobby Flay to his gorgeous orange tabby, Nacho, and his other tabby, Stella. Nacho is even considered a co-founder! Bobby Flay is an advocate for high-quality and tasty...

Made by Nacho Cat Food Review

Can Cats Get Razor Burn? Vet-Reviewed Care Facts

If you have a cat, there is a good chance that they will need to be shaved at some point in their lives, whether it be for a surgical procedure like getting spayed or neutered, or to treat a wound....

pet grooming at home

7 Best CBD Oil for Cats With Cancer in 2025 – Reviews & Top Picks

We all want our cats to have a healthy and happy life, but sometimes, it’s just not possible. When the hard days come, you can rest easier knowing that there are certain products that you can use to ease your...

giving cat cbd oil

7 Best Kitten Foods for Diarrhea in 2025 – Reviews & Top Picks

If you have a kitten with diarrhea, it can be a scary experience. Diarrhea can dehydrate your kitten and rob it of important nutrients it needs to grow into a healthy cat. In some cases, you can improve the situation...

American cat kittens eating

Why Do Cats Like Chin Scratches? 9 Vet-Reviewed Reasons

If you own a cat, you know that cats love chin scratches. You’ve probably noticed that they will rub their cheeks against your hand or any other surface if you give them the chance. That’s because cats have scent glands...

woman scratching cat's chin

Why Do Cats Meow Back at You? 5 Vet-Reviewed Reasons for This Behavior

If you have a cat, you might have noticed that they sometimes meow back at you when you talk. Some cats will even meow at you when you sneeze or make a noise. The anecdotal explanation for this behavior is...

black cat

Do Feral Cats Know How to Purr? Vet-Approved Facts & FAQ

Hearing your cat purr is usually a sign you’re doing something right. Whether they have a full belly and are thanking you, or they are simply enjoying the affection you’re providing, their contentment is heartwarming. But have you ever wondered...

Stray cats eating on the street

15 Weird Cat Behaviors That Stump Kitty Parents: Facts & Explanation

Cats are comical in some ways and confusing in others, and they have some undeniably curious habits. Often, it’s worth the effort to figure out what’s causing their behavior. If they don’t leave you scratching your head, your cat could...

cat making crazy face playing with wand