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

How to Care for a Disabled Cat With Special Needs: 11 Tips to Prepare Your Home

Disclaimer: This article has been reviewed by a qualified veterinarian using information available at the time of review. The knowledge of feline medicine...

10 Tortoiseshell Cat Breeds (With Info & Pictures)

Tortoiseshell cats are cats with beautiful and unique bi-colored, sometimes tri-colored, coats that are often black and orange or brown and gold, sometimes...

Are Baby Wipes Safe to Use on Cats? Vet-Reviewed Facts & FAQ

For the most part, cats are rather self-reliant creatures. They do a majority of their bathing and grooming and only occasional input from...

How Many Cats Lived on the Titanic? Facts & History

The RMS Titanic is one of the most famous (and infamous) ships in history. One thousand five hundred people lost their lives aboard...

More related

Can I Cut My Cat’s Nails With Human Nail Clippers? Vet-Reviewed Facts & Risks

Some cats, especially indoor cats, need to have their claws regularly trimmed. It prevents the nail from curling around and growing in on...

Gabapentin for Cats: Uses, Doses & Side Effects (Vet Answer)

Many human drugs are also used in pets, and gabapentin is one such drug. This medicine is used in veterinary medicine as an...

7 Cat Adoption Myths & the Vet-Reviewed Truths

If you’re considering welcoming a cat into your family from a shelter, you may have a few concerns. You may have heard that...

10 Best Flea Combs for Cats in 2025 – Reviews & Top Picks

Caring for your feline friend involves more than just feeding them and ensuring they get regular check-ups. One major aspect of pet care...

Keep reading

Cat Splashes Water Out of the Bowl: 5 Vet-Verified Reasons & How to Stop It

While the behavior can be frustrating due to the mess, your cat splashing their water out of their water bowl and all over the floor is normal and usually no reason for concern. Despite having a reputation for being afraid...

a cat dipping its paws on a bowl of water

Can Cats Eat Persimmons? Vet-Approved Advice & Benefits

Have you ever considered feeding your cat some exotic fruit? Perhaps you have some persimmons in your fridge and want to give your cat a taste. Filled with nutritional benefits, persimmons aren’t toxic to cats. In small amounts and infrequent...

Can Cats Eat Persimmons

How to Calm a Crazy Cat: 6 Vet-Approved Tips & Causes of Extra Energy

With their sudden energetic outbursts, wall-climbing maneuvers, putting their butts in our face, and countertop cruising, you might be forgiven for thinking that cats are more than a little crazy. However, there’s a limit to how much ‘crazy’ we can...

playful british shorthair cat

Can Cats Eat Pumpkin Seeds? Vet-Reviewed Nutrition Facts & FAQ

Yes, most cats can eat pumpkin seeds without suffering any adverse effects. Pumpkin seeds are packed with nutrients that are extremely beneficial. What’s more, some cats seem to love the taste of these seeds. Therefore, do not be afraid to...

Can Cats Eat Pumpkin Seeds

Can Cats Eat Stink Bugs? Vet-Reviewed Facts & FAQ

Let’s be honest—sometimes, cats are just plain weird in their tastes. Though most cats won’t eat a bug twice after realizing how foul they taste, for some, the fascination never wavers. So can cats eat stunk bugs? Are stink bugs...

Can Cats Eat Stink Bugs

Are Savannah Cats Hypoallergenic? Vet Approved Facts & Allergy Prevention Tips

As a hybrid between wild African Servals and domestic cat breeds, Savannah cats are gorgeous animals with unique personalities. Because they shed less than many other breeds, you might wonder if Savannah cats are hypoallergenic. Unfortunately, Savannah cats are not...

F2 Savannah Cat

Can Cats Eat Arugula? Vet-Verified Nutrition Facts & FAQ

Arugula is a bitter and slightly spicy plant that we often put in salads. With its increasing popularity in health food recipes, it is common to wonder if it is safe and healthy to serve to your cat. So can...

Can Cats Eat Arugula

Cat Drinking a Lot of Water & Meowing? Vet-Approved Advice & When To Worry

If your cat is making more noise than usual and constantly visiting the water bowl, it might be a sign that something is wrong. They could be experiencing a wide array of health concerns, or it could be something completely...

cat drinking water from fountain