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

Can Cats Eat Scorpions? Vet Approved Facts & FAQ

Cats naturally enjoy hunting, and small creatures are their favorite targets. Most insects do not pose threats to cats, but scorpions (and other...

Can Cats Eat Scorpions

Do Cats Eat Rats or Just Kill Them? Biological Reasons & Risks

In a wild setting, cats would absolutely eat a rat or mouse. These animals are their prey, which means that they will eat...

cat next to a dead rat

Are Ladybugs Poisonous to Cats? Vet-Confirmed Toxicity

Ladybugs are small, brightly colored beneficial insects that can help any garden thrive to its fullest extent. They are exceptional friends to your...

a ladybug on yellow flower

Do Cats Keep Mice Away? Vet-Approved Facts & FAQ

While some people find mice adorable and keep them as pets, they’re decidedly less than cute when you come upon one of the...

long-tailed mouse close up

More related

flies caught in a flycatcher tape

Are Raid Fly Ribbons Poisonous to Cats? Vet Approved Facts & FAQ

It can be tricky to care for our pets while attempting to get rid of pests. If you have many bugs intruding on...

American Shorthair VS British Shorthair

American Shorthair vs British Shorthair Cat: What’s the Difference? (With Pictures)

Although their names are very similar, there are distinct differences between the American Shorthair and the British Shorthair. The British Shorthair is a...

My Cat Ate Paint

My Cat Ate Paint: What Should I Do? (Vet Answer)

Although cats are far less likely to eat foreign objects than dogs, it is still possible that an inquisitive kitten may get themselves...

cat and bird

The Cats-Kill-Wildlife Conundrum: Exploring a Common Issue

While we like to think of our pets as tame animals, our cats are still deeply in touch with their wild instincts. When...

Keep reading

Can Cats Get Car Sick? Vet-Verified Facts & Info

A car ride often represents three things to your cat: change, a lack of control, and loss of freedom. Felines hate all of them, and this ramped-up anxiety and stress are even able to trigger vomiting or motion sickness in...

Cat Car Carrier

Why Does My Cat Wake Me Up Every Morning? 5 Vet-Reviewed Reasons

Some cats wake up their human companions in the wee hours of the night for whatever reason. There are also those that somehow know how to wake up their humans at the same time every morning, no matter what day...

cat sleeping with its owner on the bed

Is Rhaphidophora Tetrasperma Toxic to Cats? Precautions & Risks

The Rhaphidophora tetrasperma, also referred to as the mini monstera, is a beautifully lush plant with small, split leaves that can range in color from bright green to dark yellow. These plants have climbing vines that will grow several feet...

Are Laser Pointers Bad for Cats? Vet-Approved Safety Information & Tips

Laser pointers are popular toys, and it can be fun watching your cat chase after that little red dot. But if you’re wondering whether laser pointers are safe for cats, the short answer is that laser pointers are controversial because...

Two cats are lying on the floor. Gray cats are playing with a laser pointer.

Cat Preventive Care for Good Health & Longevity: 8 Fundamental Pillars

There is an aspect of veterinary medicine that is called preventive care; meaning preventing health problems through proactive measures. Preventative care means better health outcomes and a happy, comfortable cat. This guide will cover the importance of preventive care in...

cat being observed by a female veterinarian

Can Cats Drink Gatorade? Vet Approved Nutritional Facts & FAQ

If you have a cat that needs help rehydrating, Gatorade might be the first idea to come to mind. You’re not the only person to get this idea. Many cat owners have tried offering Gatorade to their kitties as a...

Can Cats Drink Gatorade

How to Keep Cats Out of Mulch: 12 Vet-Reviewed Tips

Neighborhood cats roaming around our yards is not something everyone enjoys. They are generally harmless, but they may visit you often, particularly if there is any food left outside, or they can get into fights with your cats. And if...

turkish-angora-cat-in-the-garden

Acana Cat Food Review 2025: Recalls, Pros & Cons

Review Summary Introduction ACANA has various premium cat food recipes and flavors that are rich with animal protein and nutrients to ensure that your cat gets everything that they need for a complete and balanced meal. It has diets specifically...

Acana Cat Food Review