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

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.

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

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

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 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...

flies caught in a flycatcher tape

Can Cats Eat Crickets? Vet Approved Health Facts & Precautions

We all know that our cats are carnivorous beasts hidden in cute bodies. Cats are obligate carnivores, which means the majority of their...

Can Cats Eat Crickets

K9 Advantix Is Not Safe for Cats: Our Vet Explains Why

Ticks can pose all sorts of problems for our pets, whether it just be from the skin irritation caused by the tick itself,...

grey cat scratching itself indoors

Can My Cat Take My Dog’s Flea or Worm Medicine? (Vet Answer)

Dogs and cats are plagued with similar parasites, including fleas, ticks, and certain worms. So, is it safe to assume that preventative options...

grey cat scratching itself indoors

More related

young tortoiseshell and white norwegian forest cat lying in bed

Can a Cat Detect Bed Bugs? Facts & FAQ

Cats have extraordinary eyesight and sense of smell and are well-known to excel at hunting. Many cat owners have also witnessed their cat...

Can Cats Eat Oranges

Can Cats Eat Oranges? Vet-Verified Facts & FAQ

Oranges are sweet, tart, and tasty and one of the world’s most popular fruit. They can often be found in household fruit bowls,...

Do you see the Do Not Disturb sign?

Do You Have a Guard Cat? How Olga Guards Her Territory

Hi, I’m Christopher! Read my introduction to learn more about me and my silly Russian Blue cat, Olga. Aggressive cats sometimes guard their...

grey cat bath shampoo bubbles

Is Your Cat’s Shampoo Poisonous? Dangerous Ingredients Explained

The majority of healthy cats don’t need to be bathed because they’re perfectly capable of keeping themselves clean, thank you very much. That...

Keep reading

How Long Should You Play With Your Cat? Vet-Verified Facts & Tips

Cats need exercise in order to be at their healthiest. That’s a fact that we’re sure you know if you’re a cat owner, however, you may not always know how long you should be playing with them or even how...

cat playing with owner

Why Don’t Cats Like Their Paws Touched? 8 Vet Reviewed Reasons

Any cat owner knows that a cat’s paws are among their cutest features, but most are off-limits to touching. Why is this? Why do some cats hate having their paws touched? Why do some allow it? In this article, we...

hand touching cat's paw

Can Cats Eat Chorizo? Vet-Reviewed Facts & FAQ

If you enjoy sausages and salami, chances are that you enjoy chorizo. If you’ve been adding chorizo to your meals on occasion and your cat has been eyeing it with interest, you might wonder if it would be okay to...

Can Cats Eat Chorizo

Are Cats Monogamous? Vet-Verified Mating Practices

It might be a sweet idea to get two cats that you’re sure are going to fall in love and live happily ever after together. Unfortunately, that type of love and relationship is not in a cat’s DNA. Cats are...

two different cats standing side by side outdoors in the garden

Meow Mix Cat Food Review of 2025: Recalls, Pros & Cons

Review Summary Meow Mix is one of the most popular cat food brands. It’s manufactured in Alabama and Thailand, and cats all over the world love it. As their jingle states, cats ask for it by name. Because of its...

Meow Mix Cat Food Review

Can Cats Drink Coffee? Vet-Reviewed Risks & Precautions

Cats are curious creatures, and they tend to investigate everything that they encounter. If your cat is like most, they have stuck their noses in their fair share of cups and bowls in your kitchen! There is nothing to worry...

Can Cats Drink Coffee

Can Cats Eat Peanut Butter? Vet-Reviewed Facts & FAQ

Peanut butter is a snack loved by humans and dogs alike, but is this sweet, nutty treat something you should share with your cat? As delicious as PB is, this food should not be added to your cat’s treat rotation....

Can Cats Eat Peanut Butter

Should I Get My Cat Spayed Or Neutered? Facts To Consider (Vet-Reviewed)

To spay or not to spay—that is the question. Or is it? All of these years, pet owners have been advised to fix their pets to eliminate the possibility of unwanted pregnancy. Granted, there is an overabundance of homeless cats...

little cat with Elizabethan collar after spay surgery