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.

My Cat Ate a Poisoned Mouse! Crucial Vet Reviewed Next Steps

My Cat Ate a Poisoned Mouse

Cats are natural predators. They love to hunt toys, bugs, and small animals if they get the opportunity. Many people have cats as pets for companionship and to help protect their homes from rodents and other pests (like cockroaches).

Not all cats eat the mice they catch and kill, but some do. If your cat eats a rat or mouse, it is unlikely they will get ill, even if the rodent has been poisoned. The idea of your kitty eating a poisoned mouse might seem scary, but if you know the risks and the signs to look out for, you can have the confidence of knowing that you can handle the situation.

divider cat paws 2 oct 2024

The 3 Steps to Follow After Your Cat Ate a Poisoned Mouse

1. Understand the Risk

While it is possible, it is not commonly reported for a cat to get seriously ill after consuming some or even all of a poisoned rodent. The amount of poison a rodent must eat to be deadly is much less than a cat would need. This does not mean that the poison won’t affect your cat in any way, and it is always recommended to contact your vet if you have concerns your cat may have been exposed to a poison.

Poisoning is not the only risk of a dead rat or mouse. The rodents harbor mites, roundworms, and fleas—none of which you want your cat to become infested with. If your cat is your designated rodent hunter, they should receive regular parasite prevention medications and treatments.

sick ginger cat
Photo Credit: JumpStory

2. Keep an Eye Out for Signs

If you notice that your cat has eaten some or all of a rodent, it is a good idea to watch for signs of poisoning or illness for about 48 hours. During this time, your pet may display the following clinical signs if the poison in the rodent has affected them:

  • Lethargy
  • Vomiting
  • Diarrhea
  • Abdominal discomfort

If any of these signs arise, contact your veterinarian and visit an emergency veterinary clinic. But you can relax if no signs of poisoning are displayed 48 hours after your cat eats a mouse.

Parasites take longer to settle in and do not pose as much of an immediate danger as poisoning does. However, you should continue to keep an eye out for signs of parasite infestation, which include:

  • Dull coat
  • Coughing
  • Bloody feces
  • Loss of appetite
  • A “pot belly”

If your cat gets infested with parasites, a veterinarian can treat the problem. Afterward, your cat will live a happy, healthy, and safe life.

If you need urgent veterinary advice, consult a vet online.

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


3. Consider Other Forms of Rodent Management

One of the best ways to ensure that your cat does not eat a poisoned mouse is to avoid using rat poison on your property. An effective option is a mechanical “snap trap” that lets you load it with treats that mice and rats like, such as peanut butter or small pieces of meat.

When a rat goes to eat the treat, the trap snaps closed and kills them. This type of trap requires you to clean it frequently, but it will ensure your cat stays safe from poisons.

Other options include:

  • Sonic Pest Repellents — These are designed to repel rodents with noise frequencies that they can hear but humans, dogs, and cats cannot. Keep in mind that little research exists to verify the effectiveness of these products. Some people report that they work, while others say they don’t. The only way to know if a sonic pest repellent will work for you is to try it.
  • Humane Release Traps — These are usually designed to look and function like pet habitats, but they are meant to be temporary and are not that large. The idea is for you to put a snack inside, and when a mouse enters to retrieve the snack, the habitat automatically closes, and the rodent is trapped until you let it loose somewhere else.
  • A Professional Pest Control Specialist — Let your service provider know that you are trying to keep rodents away while protecting your cat, and they should be able to present you with humane pest control options to consider.

The idea is to keep rodents out of your house without endangering your pet cat’s health and happiness. If one pest control method doesn’t work, you can try another.

Pest Repeller
Photo Credit: GS23, Shutterstock

divider cat paws 2 oct 2024Conclusion

While it’s true that cats can become sick after eating a poisoned mouse, few cats become ill, and prompt veterinary intervention can help those affected recover. Cats are at higher risk of contracting a parasitic infestation than anything else. Now, you know the signs to look for if your kitty eats a mouse and what to do about it if you notice any problems.


Featured Image Credit: Viacheslav Lopatin, 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

Cats Peeing in Sink or Bath Tub? 7 Ways to Stop it!

One of the easiest parts about owning a cat is that they naturally train themselves to use a litter box. But what if...

Siamese Kittens for Sale in Maryland: Breeders List 2025

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

Can Cats Eat Cookies? Vet-Reviewed Facts & FAQ

While a nibble of your cookie is unlikely to kill your cat, cookies are far from healthy for cats and absolutely should not...

9 Best Cat Window Perches & Beds in 2025 – Reviews & Top Picks

Cat window perches and beds give pets comfortable places to survey the world outside. They allow cats to enjoy watching birds fly by...

More related

The New Zealand Natural Pet Food Co Brand Review 2025: A Detailed Look

If our kitties could thrive on love and affection alone, they would all live a long, healthy life. Unfortunately, we know it takes...

Dr. Karyn’s Feline Tried and Tested Home Improvements

Hi, I’m Dr. Karyn! Read my introduction to learn more about me and meet my five hilarious cats: Clutch, Cyril, Alex, Zelda, and...

How Much Wet Food Should a Cat Eat? Vet-Approved, Healthy Diet Advice

Many cat owners are unsure how much wet food their cat should eat; however, the answer is not as clear since it will...

Burmese Cat Lifespan: How Long Do They Live? Vet-Reviewed Info

Burmese cats are known for their social, adventurous, and playful nature. They have an average lifespan of 10-16 years, but depending on the...

Keep reading

10 Best Cat Shampoos of 2025 – Reviews & Top Picks

Cats are notorious for wanting things on their own terms. They are solitary creatures that feel they can do everything for themselves, including bathing. Yes, cats are great at keeping themselves groomed. That doesn’t mean they shouldn’t get baths routinely....

tabby cat taking a bath

6 Best Organic Cat Shampoos of 2025 – Reviews & Top Picks

Some cats are easy to bathe. And some cats turn bath time into a brutal beat down. You probably have a few battle scars to prove it! Some people want the best for their fur baby, even if their cat...

cleaning cat by shampoo on water bath

How to Clean a Cat Bowl: 8 Easy Steps & Vet-Reviewed Precautions

A cat bowl is easily one of the most important pieces of equipment for a cat owner. Just like humans, cats are affected by food-borne illnesses, most commonly caused by bacteria such as Salmonella, E.coli and Listeria. These illnesses can...

hepper nom nom cat bowl

Wellness vs Blue Buffalo Cat Food: Our 2025 In-Depth Comparison

If you’ve spent time wandering around your pet food store, you might’ve noticed two brands that are a bit higher-end than normal: Wellness and Blue Buffalo. Each of these brands was started fairly recently, and both have cashed in on...

Wellness VS Blue Buffalo

Why Is My Cat Panting and Drooling? Vet-Verified Causes & Prevention

Cats are usually fastidious groomers that don’t allow a single hair to fall out of place. However, there are times when cats can drool all over themselves, which is especially concerning when your cat is panting. If a cat is...

Orange cat drooling

How Long Do Siberian Cats Live? Vet-Verified Lifespan Facts & FAQ

The Siberian, also known as the Siberian Forest Cat, originates from Siberia, Russia, and is highly resistant to cold weather and cold conditions. It has a fluffy tail, thick coat, and is slow to mature. It is considered a good...

Siberian cat on a winter walk

How Do Cats Play With Dogs? Body Language & Behaviors Explained

Cats and dogs are natural enemies, right? Wrong. Many cats and dogs actually enjoy each other’s company; they can even become friends! It’s not uncommon to see best buds of different species cuddling up together or playing with one another....

dog and cat on floor

How to Tell if a Cat Is Stressed: 12 Vet-Reviewed Signs to Watch For

In some ways, cats are a lot like people. They get stressed and anxious. Unlike humans, they can’t tell us their problems using words, and we have to look for subtle signs to identify when a cat is stressed. This...

Sad depressed cat laying down