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

Why Does My Cat Sleep With Me and Not My Husband? 6 Likely Reasons

Often, our cat’s behaviors can seem strange. One point of confusion is often the places our cats try to sleep. They seem to...

7 Vet-Verified Facts About White Cats You’ll Love to Learn

While all cats are incredible and perfect, white cats have their own special magic. Some cat-loving people claim that white cats tend to...

Why Are Black Cats Associated with Halloween? Origin & Myths

It’s the spookiest month of the year (and my favorite!) but what’s up with all the black cat decorations everywhere? On the one...

How to Get a Urine Sample From a Cat: Effective Vet Approved Tips & FAQ

A urine sample can help a veterinarian check for various conditions in a feline’s urinary tract and kidneys. If your vet has asked...

More related

Cats & Daylight Savings Time: Will It Affect My Pet? Vet-Approved Facts & Care Tips

Daylight savings time is either a hassle or a gift, and there’s no way around it, as an extra hour tacked on at...

Ukrainian Levkoy Cat Breed: Info, Pictures, Care & More

If you’re looking for a hairless cat, you must meet the Ukrainian Levkoy! This breed is so rare that it hasn’t even been...

5 Best Cat-Proof Blinds Durable Enough to Last in 2025 – Reviews & Top Picks

Cats like to stretch out and clean their claws frequently, and most pet owners understand this means that they have to protect their...

Does Peppermint Oil Kill Fleas on Cats? Vet-Reviewed Effectiveness & Safety

Over the past decade, there has been an increased interest in using essential oils, including peppermint oil, to control fleas and ticks on...

Keep reading

Why Is My Cat Limping All of a Sudden? 7 Possible Reasons

Cats communicate differently than humans, so it’s helpful to observe and get to know your cat’s behavior. Understanding how your cat acts can help you catch any inconsistencies that point to underlying health concerns. If you notice that your cat’s...

calico cat standing up on hind legs

Can Cats Eat Goldfish Crackers? Vet Approved Facts & FAQ

Feeding time comes with numerous questions about what and how to feed your pet. Is it okay to give them human food? Can you share, for example, some Goldfish crackers? No, you should not be sharing your Goldfish crackers with...

Can Cats Eat Goldfish Crackers

How to Stop a Cat From Spraying: 8 Vet-Approved Tips

It can be frustrating to have a cat that sprays, whether it is your cat that is spraying around the house or yard or if a stray cat is wandering onto your property and leaving the pungent smell behind. It...

black male cat spraying at the garden

Royal Canin Cat Food Review in 2025: Recalls, Pros & Cons

Review Summary Introduction Royal Canin aims to make cat foods that prioritize what pets need, rather than what their owners think they’d prefer to see on the ingredients list. Their foods are formulated in collaboration with leading scientific, behavioral, and...

Royal Canin Cat Food Review

Why Does My Cat Lay on My Stomach? 5 Vet-Verified Reasons

When you’re sitting still or lying down for long enough, it’s perfectly normal for your cat to come around and try to spend a little extra time with you. But why is your cat taking every chance they get to...

cat-sleeping-on-owners-lap

10 Best Flea Sprays for Cats (2025) – Reviews & Top Picks

Fleas can be irritating at the best of times, but if left untreated, they can cause discomfort and even lead to your cat developing flea allergy dermatitis. At the first sign of fleas, it’s a great idea to treat your...

Cat-with-fleas

Can Cats Eat Jelly (Jam)? Vet-Reviewed Facts to Consider

Spreading jelly on your morning toast or putting it in a sandwich is an easy, delicious way to make a quick meal taste good without too much work. Food, no matter what it is, is always bound to capture a...

Can Cats Eat Jelly (Jam)

14 Signs a Stray Cat Likes or Dislikes You (Vet-Reviewed)

Many people have a few cats that tend to hang up around their houses. Maybe they gather under your front porch or show up because they know they can get a good meal at your house. While some feral or...

stray cat sitting in the street