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

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

50 Perfect Crying Cat Memes – Sad But Hilarious Jokes

The Crying Cat meme, also known as Sad Cat meme, is a series of photoshopped pictures of a teary and glassy-eyed kitty put...

8 Best Hanukkah Cat Gifts in 2025 – Reviews & Top Picks

The only thing better than spending a holiday with your feline companion is spending a holiday that lasts 8 days with your cat....

Natural Balance Cat Food Review in 2025: Recalls, Pros & Cons

Review Summary The pet food industry is big business in the United States, with an estimated $30 million worth of pet food sold...

Cat Sitter Checklist: Crucial Info You Should Leave With Your Sitter

There will inevitably come a time in your tenure as a cat owner when you’ll need to leave your beloved fur baby behind...

More related

Cage Rest for Cats: 6 Vet Approved Tips to Get Your Cats to Take Bed Rest Seriously

At one point or another, some cat parents find themselves in a scenario where the vet tells them that their pet needs cage...

Omega 3 For Cats: Our Vet Discusses Benefits, Diet & Supplementation

Omega 3s are a type of fatty acid that is a nutritional component of some foods. Omega 3’s can also come in the...

How to Play With a Cat at Every Age: Vet-Reviewed Guide

Playing with your cat is a fun way to strengthen your bond and help your kitty become a healthier version of themselves. Some...

How Big Do British Shorthairs Get? Vet-Reviewed Growth & Weight Chart

The British Shorthair is a sturdy cat with a strong, compact build. They have a dense but short coat. Some people may mistake...

Keep reading

Why Do Cats Sleep in a Circle? Vet Reviewed Reasons

If you own a cat, your smartphone is likely filled with photos of your cat sleeping. They always find interesting positions and places to crawl into for a nap, but perhaps their coziest-looking sleep posture is curled up into a...

a siamese cat in a curled up sleeping position

Play Aggression in Cats: Vet-Approved Signs, Causes & Solution

It’s all fun and games with your kitty until the claws are out or they are causing mischief! All too often, we can be having a cuddle or fun time with our cat when our forearm is suddenly gripped by...

Aggressive cat growling

Cat Respiration Rate: How Fast Should My Cat Be Breathing?

You may notice your cat sleeping peacefully next to you and breathing rapidly — or so it seems. Exactly how fast should a cat be breathing? It can be scary not knowing if your cat is all right or not....

close up white cat breathing

Can Cats Eat Grasshoppers? Vet-Approved Nutrition Facts

Have you ever seen your cat stalking a bug, like a grasshopper, only to gobble them down once they catch them? Could your cat get sick from eating grasshoppers? Cats can eat grasshoppers, but it is not a good idea...

Can Cats Eat Grasshoppers

How Long Do Tabby Cats Live? Vet-Approved Lifespan Facts

Tabbies are one of the most popular cats in the world. However, some people don’t know that they are actually not a specific breed. A cat is considered a tabby because of its unique coat pattern, whose appearance can vary...

tabby with green eyes laying on a rug

Why Does My Cat Want to Go Outside So Bad? 6 Vet Approved Reasons

If you can’t open a single door in your house without your cat trying to bolt, you know how stressful the constant escape attempts can become. But have you ever wondered why your cat constantly tries to flee to the...

Toyger cat outside

When to Euthanize a Cat With Liver Failure: Vet-Reviewed Advice

If you’re considering when the right time is to say goodbye to your cat if they are in liver failure, you are not alone. Knowing when to say goodbye is a heartbreaking decision for any owner, and it can be...

woman brought her cat to the vet

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