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.

Do Steroids Make Cats Aggressive? (Vet Answer)

Abyssinian cat hisses

You’ve likely heard of someone who had “roid rage,” which is a physiological response that humans can sometimes experience because of steroid administration. Just like how humans on steroids can experience quick mood swings and agitation, steroid administration to your feline companion may also cause behavior changes, like an increase in agitation. However, this is more common in dogs. If you want to learn more about the effects of steroid administration and how to support cats who may have behavior changes, keep reading.

divider 3 paws

What Are Steroids?

Corticosteroids are a type of steroid that is naturally produced by the adrenal glands, and they benefit the body in several different ways. They are involved in inflammation, stress, metabolism, and electrolyte regulation, among other things.

Certain medical conditions that your cat may encounter in their lifetime may require treatment with steroids. Examples of conditions that may require steroid administration are allergies, dermatitis, asthma, and immune-mediated disease processes.

vet holding cat for vaccination
Image Credit: bmf-foto.de, Shutterstock

Side Effects of Steroid Administration

The effects of steroid administration vary and can be correlated with the dosing. Steroids may be dosed at physiological, anti-inflammatory, or immune-suppressive doses. Undesirable side effects are more likely to be noted with high doses of steroids.

Commonly reported short-term side effects of steroid administration include:
  • Increase in water intake
  • Increase in urination
  • Increase in agitation
  • Increase in restlessness
  • Increase in appetite

Additionally, cats that are borderline diabetic may become diabetic with the administration of steroids. Similarly, a cat with mild heart disease may develop severe heart complications with steroid administration.

Cats that may need to be on steroids for more than a few weeks can develop the above side effects but could also be at risk for developing long-term side effects as well.

Long-term side effects include:

Ways to Support Your Cat

If your cat is experiencing undesirable side effects from steroid administration, it is important to reach out to the prescribing veterinarian. The steroid should not be abruptly discontinued unless recommended by your veterinarian, as this could cause changes to the body. In some cases, the steroid dosing may be reduced, and improvement in undesirable side effects may be achieved. Alternatively, a different medication may be prescribed.

cat owner man talking to veterinarian
Image Credit: silverblackstock, Shutterstock

Other Thoughts to Consider

Although your pet is receiving steroids, there may be other reasons for the clinical signs that you are seeing, including aggression. Some pets may act aggressively during times of stress. During an office visit or shortly after a car ride, your pet may be feeling stressed and may act out aggressively. Similarly, a cat who is in pain or is anticipating pain may use aggression to protect themselves from unwanted attention.

It will be important to be mindful of your cat’s behaviors and share your concerns with your veterinarian. Additionally, be mindful of the cues your pet is providing you with and respect their boundaries.

divider 3 paws

Conclusion

Yes, the administration of steroids may alter your cat’s disposition. Although less common than in dogs, aggression may be noted in a cat receiving steroids. It is important to not just assume the aggression is related to the medication, as it could also be the result of fear or discomfort. Most importantly, keep communication open with your veterinarian if you notice concerning signs in your pet while receiving steroids.

See also:


Featured Image Credit: Slava Dumchev, 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

Why Does My Cat Sit By the Door? 5 Vet-Verified Reasons

To many cat owners, it may seem as if their beloved kitties intentionally and precisely plan their actions to confuse us! Many of...

Persian Kittens for Sale in South Carolina: Breeders List in 2025

Catster advocates for adopting before shopping, though we fully understand there are many reasons for seeking a breeder. So, we encourage it to...

How Does Cat Allergy Testing Work? Vet-Reviewed Test Types, Signs & FAQ

Whether your cat is displaying signs of allergies or you just want to get ahead of things, you might wonder how exactly allergy...

How Long Do Devon Rex Cats Live? Average Lifespan Data & Facts

The Devon Rex cat is famous for their unique looks, marked by a triangular face, huge ears, and large eyes. But even more...

More related

Sisal Rope vs. Sisal Fabric for Cat Scratching Posts: Key Differences, Benefits & FAQ

Whether you’re a cat owner or someone who simply enjoys making DIY projects, you may have wondered what the difference is between sisal...

Is There a 911 for Pets? Vet-Approved Emergency Facts

When we are in trouble, emergency services are only a phone call away. But things happen to people’s pets daily that require veterinary...

Why Is My Cat Losing Hair? 9 Causes & Treatments (Vet Approved)

Hair loss in cats, officially known as alopecia, is a fairly common occurrence. The range of how much hair is lost and on...

Austin Air HealthMate Review 2025: A Detailed Look

There’s nothing better than snuggling with your kitty after a long day. Unless, of course, you happen to be allergic to that loveable...

Keep reading

7 FIV in Cats Vet-Approved Facts You Might Not Know About

Feline immunodeficiency virus (FIV) is a common and serious infection in cats worldwide. This lentivirus, which weakens the cat’s immune system, is similar to the human immunodeficiency virus (HIV) responsible for AIDS in humans 1. Although cats with FIV may...

woman holding her cat in vet clinic

Why Do Cats Like to Be Pet While Eating? 6 Vet-Reviewed Reasons

Cats may have behaviors that are almost “expected” of them, but mealtimes can bring out unusual habits. Some cats love to eat alone, some prefer eating from a raised position, and others want the company of their owners when they...

Two cats being fed cat food from a tin can

How to Clean a Cat’s Nose: Vet Approved Step-By-Step Guide

As a pet parent, you do everything for your cat, from feeding them to grooming and taking them to the vet. When your cat has a stuffy nose, whether from being dirty or from a cold, you want to help...

person cleaning cats nose

How To Read a Cat’s Body Language: 5 Vet-Reviewed Moods & Signals

While cats can’t use words to tell us how they’re feeling, most are expert communicators who rely on different types of vocalization, body language, and chemical cues to tell humans and other cats how they feel. Cats use their tails,...

A cat looking at something far away

How to Introduce a Hyper Dog to a Kitten: Vet-Reviewed Step-by-Step Guide

Having a family full of furry friends can be a lot of fun if all the required precautions have been considered. When you want to introduce more than one species into the mix, things can be more complicated, even when...

dog and kitten

Is Scented Litter Safe for Cats? Vet-Reviewed Facts & FAQ

Several online sources suggest that scented litter is bad for cats. It’s alleged to cause recurrent urinary tract infections (UTIs) due to irritation caused by fragrances added to mask the smell of cat pee. Others argue that scented litter should...

Catster_Is Scented Litter Safe for Cats

3-Month-Old Kitten: What to Expect (Vet Approved)

Like children, baby cats go through specific stages of growth and development during their first year of life. As a pet parent, it’s important that you know what to look for as your kitten grows so you can best support...

Small calico kitten walking

How Long Do American Shorthair Cats Live? Average Lifespan Data & Facts

Studies have shown that owning a cat can reduce stress levels and improve mental health, leading to a longer and happier life. But not all cats are created equal when it comes to lifespan. The American Shorthair, for example, is...

American shorthair male cat tabby