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

Are Indoor Cats Happy & Fulfilled? Vet-Verified Facts & FAQ

Many cat owners wonder about the happiness and well-being of their cats when it comes to keeping them indoors. On one hand, there’s...

Why Do Cats Spray? Our Vet Explains the Common Reasons & Solutions

Cats mark their territory to communicate their presence to other animals. If you find urine in places other than the litter box, you’ll...

Is Tea Tree Oil Poisonous to Cats? Vet Reviewed Risks & FAQ

Tea tree oil is often used for its antibacterial and antimicrobial properties but it should never be used on cats. Holistic health practitioners...

How to Cat-Proof Wires: 9 Vet-Approved Solutions

Unfortunately, “curiosity killed the cat” can be an apt saying when it comes to electric wires and cats. They are known for their...

More related

Fur Goodness Sake – A Welcome, But Well-Overdue Change Fur Good

They say that a leopard cannot change its spots, but thanks to a landmark vote in Poland, they can feel a little more...

Healthy Cat Ears: 6 Vet-Verified Care Tips

Like dogs, cats need a regular grooming routine to stay healthy. Brushing your cat is key, especially if they have long hair, but...

9 Best Cat Grooming Gloves in 2026 – Reviews & Top Picks

If you have tried to pin your cat down and run a comb through their fur to help clean them, remove dead fur,...

Why Do Cats Play With Their Tails? 7 Possible Reasons (Vet-Reviewed)

Are you wondering why your cat chases their tail? Cats may be set in their ways, but they can surprise us from time...

Keep reading

Can Cats Take Human Antibiotics? Vet-Reviewed Health Precautions & Risks

No one likes to see their beloved cat in pain suffering from a pesky infection. How convenient would it be to be able to offer your sick cat your leftover antibiotics after your last illness? If you have some leftover...

Red kitten and orange pills_saviskaya irryna_shutterstock

Is My Cat Deaf? 6 Vet Approved Ways to Tell

If you’ve been asking yourself, “Is my cat deaf or ignoring me?”, you’ve probably noticed changes in your cat’s behavior. Maybe they are not responding to your voice like they used to, or perhaps they seem oblivious to the vacuum...

cat ear close up

Why Is My Cat Suddenly Sleeping in Odd Places: 7 Vet-Verified Reasons

Did you know cats can sleep between 12 and 18 hours daily? It’s true, and studies suggest that almost 40% of cats will sleep more than 18 hours in a single day!1 Since your kitty spends so much time sleeping,...

grey tabby cat sleeping on warm radiator

Purina Beyond Cat Food Review in 2026: Recalls, Pros & Cons

Review Summary Purina Beyond is a pet food line from the familiar name Purina. Purina has been making pet food for nearly a hundred years, so their name is not new on the market. Due to pet owners wanting to...

Purina Beyond Cat Food Review

Why Don’t Cats Listen? 6 Vet-Verified Possible Reasons

​​ One of the many perks of dog ownership is the feeling of being listened to. “Sit,” “heel,” and “stay” commands bring satisfaction every time that they’re obeyed, but pups show understanding even when we’re venting. They’ll rally through an...

Closeup portrait of old calico cat lying down by kitchen on tiled floor in home

How to Care For a 6-Month-Old Kitten: Vet-Verified Complete Guide

Kittens are typically curious, playful, feisty, and even mischievous. They are no longer tiny, fragile newborns, but they aren’t fully grown and matured either. It’s vital to understand the specific types of care that your kitty requires when they’re 6...

Bengal kitten playing

How to Speak Cat: Vet-Verified Ways of Communicating with your Kitty

Think your cat can’t talk to you and you can’t talk back? Learn how to speak cat by paying attention to your cat’s body language and vocalizations....
young cat owner playing with her pet at home

What Is the Difference Between Cat & Human CBD Oil? Facts & Safety Guide

With reports and testimonies soaring in, CBD is being heralded as a remedy for anxiety, nausea, depression, pain, and so much more. With significantly more research available on human CBD, you may be wondering what the differences between CBD for...

maine-coon-cat-lying-near-CBD-oil

Love Cats? So Do We! Join the Catster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.




Sign up for the Catster Email Newsletter

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.