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 Fly: Vet-Verified Dangers & Tips

Share

My Cat Ate a Fly

Cats will chase after and pounce on anything that moves, including small insects. Grasshoppers and flies are popular targets, and they flutter and glide with unpredictable grace full of starts and stops that are the definition of perfect feline entertainment. But if your cat just snacked on a fly, you may be wondering if there’s a trip to the emergency veterinarian in the future. The answer, you’ll be happy to hear, is probably not.

Flies carry parasites, bacteria, and viruses, so they’re not great to have around, but the chance of a cat ending up with a parasitic infection after eating a fly is low. Reach out to your veterinarian if you have any concerns about your cat’s health or if they show signs of illness, such as stomach trouble that doesn’t start to improve within 24-48 hours.

divider 3 paws

What About Flies That Have Been Sprayed With Insecticide?

The amount of poison found in one fly that met its end due to insecticide is unlikely to cause illness in cats. However, if your cat comes into direct contact with an insecticide, this is a different story.  Many insecticides are toxic to cats and should be stored in places that kitties can’t access, such as a locked cabinet. Products that contain permethrin are a particular concern since they have the potential to be fatal 1.

Permethrin is commonly found in bug sprays and products designed to be sprayed on fabric to keep mosquitos and other biting insects at bay. It’s also found in canine-flea treatments, which is why cats can’t use the same anti-flea products as dogs. Make sure you read the label of any insecticide being used around the house or directly on an animal.

When to Contact Your Veterinarian

Reach out to your veterinarian immediately if you suspect your cat has come into direct contact with an insecticide. Don’t wait for signs to develop as permethrin toxicity can quickly lead to tremors, seizures, and even death. Make sure to have the product your cat got into on hand so you can provide your veterinarian with accurate information about what they consumed and when.

Consider writing down important information you don’t want to forget, such as when your cat was exposed, and if they are showing any unusual signs, such as twitching, lethargy, drooling, or agitation.

Is It True That Some Cat Foods Contain Flies?

There’s currently a great deal of interest in developing ways to use insect-based protein, including black soldier fly larvae, in human and pet foods. Pet foods featuring insect proteins are currently available in some European nations. Insect farming is a much more sustainable practice than traditional agricultural practices such as beef and chicken production. It requires far less land, water, and energy than meat production and produces far less greenhouse gasses.

divider 3 paws

Why Do Cats Play With Bugs?

Cats are excellent hunters. The urge to stalk, spring, and pounce is instinctual. A study published in the British Journal of Nutrition found that bugs and insects make up 1.2% of a feral cat’s diet. Our well fed, domesticated cats are probably not hunting flies and grasshoppers for their nutritional value, but to meet their hunting needs. Even indoor cats still retain their hunting instincts and will practice on whatever they can find.

cat and grasshopper
Image Credit: Deniza-40x, Shutterstock

Do Flies Lay Eggs on Cat Food?

Flies can lay eggs on cat food that’s been left out, but it usually takes around 24 hours for maggots to appear. Regularly washing your pet’s food dishes can help prevent flies from bothering your cat’s food. Bowls used for food should be washed after every use, and wet food should only be allowed to sit for about 2 hours before being removed. Cleaning spills quickly after they occur can also minimize the chance of flies being attracted to your pet’s eating area.

Are There Ways to Naturally Get Rid of Flies?

Flies like hanging out around garbage cans and decaying materials like garden mulch, as they prefer to lay eggs on organic waste. Once they find a suitable place to breed, flies often return repeatedly.

However, a few modifications can encourage them to head elsewhere, including using trash cans with sealing lids, covering food, and staying on top of spills and crumbs. Installing window and door screens and ensuring they’re in good working order can keep flies outside where they belong. You can contact your veterinarian before using bug spray to confirm that the product is safe for use around cats.

a fly on dog or cat food
Image Credit: laila63, Shutterstock

divider 3 paws

Conclusion

Cats enjoy chasing and pouncing, and insects such as flies are commonly on the receiving end of this instinctive feline behavior. There’s generally no cause for concern if your cat eats a fly or two. However, flies can carry lots of germs, so there are things we can do to discourage them from coming into our homes.

Cats can often be persuaded to leave insects alone by engaging in short but frequent play sessions with them. Using toys that most resemble natural prey animals, e.g. mice, allows your cat to use up some of their hunting energy.


Featured Image Credit: sophiecat, 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.


Catster's Digital Magazine is Back!

Vet-approved health & behavior advice

Real cat stories & community features

Chatting About the Importance of Spaying/Neutering, Cat Retail Shopping Ban & Red-Level Storms | Chatty Cattys, Episode 30

In this episode of Catster’s Chatty Cattys podcast, Nicole and Dr. Karyn are celebrating a major legal win for pets before diving into...

Is Your Cat Happy? Here’s How You Can Tell

Cats have a reputation for being indifferent, even inscrutable. But despite their seemingly ambivalent appearance, cats experience many emotions, including happiness, and they...

Human Brains Age Like Cats – New Study Debunks the 7-Year Rule

If you’ve ever caught your senior cat staring blankly at a wall, wandering the halls at 3 am, calling out for no clear...

Chatting with Devin About Here! Have a Kitten, Fostering, & Why Two Are Better Than One | Chatty Cattys, Episode 29

In this episode of Catster’s Chatty Cattys podcast, Nicole & Dr. Karyn sit down with Devin, the founder and one-woman show behind “Here...

More related

Can Cats Eat Banana Bread? Vet-Approved Facts & FAQ

There are precautions we need to take when sharing tasty treats with our feline friends. Sometimes, our food is a healthy snack, and...

Persian Kittens for Sale in Texas: Breeders List 2026

Catster advocates for adopting before shopping, though we fully understand there are many reasons for seeking a breeder. So, we encourage it to...

How to Tell If Your Cat Needs to Pee: 5 Vet-Reviewed Signs to Look For

Have you ever wondered if your cat needs to go to the bathroom? For example, you might be thinking of taking your kitty...

Kitten Food vs Cat Food: What’s the Difference? Vet-Reviewed Facts

Kittens and cats may be the same species but have very different needs. With the world of pet ownership comes a load of...

Keep reading

Carbon Monoxide Poisoning in Cats: 3 Vet Reviewed Signs & What to Do

Carbon monoxide poisoning can occur when any fossil fuel is burned in an enclosed area. Even just leaving your car running with the garage door closed for long periods is very dangerous for this reason. Carbon monoxide also comes from...

bored domestic cat

Are Daisies Toxic to Cats? Vet-Reviewed Risks & Advice

Daisies are common flowers that you can find in gardens all over the world. Several different species of flowers are referred to as daisies or mistaken as them. So, it can be a challenge to determine if the flower in...

Catster_Are Daisies Toxic to Cats

My Cat Is Obsessed With Their Automatic Feeder, Should I Worry? Vet-Reviewed Causes & Facts

Cats, generally speaking, are food lovers. They become very intrigued and interested in food and are always hoping for a bit more. Given that you are reading this article, it is assumed you tried out an automatic cat feeder. But...

automatic cat food dispenser or pet feeder

Do Cats Gain Weight in the Winter? Vet Approved Advice

Humans tend to gain weight in the winter because it’s much harder to get your daily exercise when stepping outside might cause you to slip, fall, and eat the icy pavement. Cats also tend to gain weight during the winter,...

Neva Masquerade cat in the snow

11 Vet-Approved Cat Heart Facts: How Feline Hearts Compare to Ours

The size of a cat’s heart is, naturally, much smaller than that of a human, but it is just as important. It pumps oxygenated blood around the body while carrying carbon dioxide and other waste products away. Although much smaller...

female vet checking up the cat

Do Cats Need Wet Food? Vet-Reviewed Benefits, Facts & FAQ

Are you wondering whether wet food is necessary or just a luxurious treat for your feline companion? The truth is that wet food is not an absolute requirement for a cat’s health, but it does come with a few benefits...

cat eating canned tuna

5 Homemade Cat Food Recipes for Cats with Kidney Disease 

If your cat has recently been diagnosed with chronic kidney disease or kidney failure, you might be thinking of ways to improve your little furry one’s quality of life. The kidneys’ primary function is to remove waste from the blood,...

Homemade Cat Food Recipes for Cats with Kidney Disease 

Is Sedum Poisonous to Cats? Common Houseplants Examined & Vet-Reviewed

When it comes to succulents and cats, you can never be too careful. The last thing you want is something growing in your garden or that you bring into your home to make your furry friend sick or worse. Luckily,...

Catster_Is Sedum Poisonous to Cats

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.