Get

In Your Inbox

Dogster 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 Dog Keeps Eating Flies, What Should I Do? Vet-Verified Facts & FAQ

Share

Border Collie looking at a fly

Like all animals, dogs tend to engage in all kinds of weird behaviors, including eating flies. Some dogs simply can’t withhold the excitement that they feel when they hear the buzzing sound in the air, and they run straight to the fly, trying to either catch or eat it.

If you’re a dog parent, this behavior may concern you because flies are typically considered gross bugs that annoy us. However, many dogs consider insects to be treats, hence why they try to eat them. So, if your dog eats a fly every now and then, there’s typically no need to worry, as this behavior is entirely normal. However, beware; if your dog is air-biting or chasing imaginary flies, this is completely different and could be a sign of an underlying health problem.

Read on to learn why your dog keeps eating flies, if such behavior is safe for dogs, and if there’s anything that you should do about it.

Why Do Dogs Eat Flies?

Dogs are natural-born hunters and scavengers, so it’s in their nature to hunt, catch, and search for their prey. This also means they tend to eat all kinds of items that we may find gross. Since pet dogs typically don’t have opportunities to hunt wild animals, they will hunt insects instead, including house flies.

Chasing, hunting, and eating flies are fun for your dog because these actions are mentally and physically stimulating. Some dogs may also engage in such behaviors due to boredom or too much energy.

Dogs with high prey drive and activity levels are more prone to chasing and eating flies, though this behavior could occur in any dog. It’s also possible for dogs eating flies to be a sign of behavioral, neurological, or digestive problems. Some dogs may also eat flies simply because they like the taste!

Flies
Image By: Buntysmum, Pixabay

Is Eating Flies Safe for Your Dog?

Eating a fly every now and then shouldn’t harm your canine in any way. Many people believe that their dogs could get sick from eating a housefly due to the diseases that they can transmit. However, after a dog eats a fly, it gets digested in their digestive system, and there is no evidence that they can transmit any diseases. 

As dogs are unable to differentiate between harmless and poisonous insects, we should still keep an eye on anything your dog eats and try to deter your dog from this behavior.

How to Deter Dogs From Eating Flies

If your dog only occasionally eats flies, there’s no need to worry or try to stop the behavior. If it becomes obsessive, however, you should try to prevent this behavior. 

There are a few things that you can do to deter your dog from eating flies:

  • Provide your dog with regular exercise and mental stimulation to prevent boredom.
  • Provide your dog with fun activities, toys, and enough play time throughout the day.
  • Secure screens in your windows to prevent flies from accessing your home.
  • Train your dog to stay away from insects, including flies especially when you do outdoor activities where flies and other insects are plenty.

There’s no way to ensure that your dog will never eat another fly in their life, but it’s still important to try to reduce these behaviors to keep your furry companion happy and healthy.

dog and owner walking
Image By: Blazej Lyjak, Shutterstock

What Should You Do if Your Dog Eats a Fly?

If your dog eats flies but seldomly, there’s nothing in particular that you need to do about it. However, if you notice frequent or compulsive fly eating and chasing in your dog, it is recommended to consult with your veterinarian or animal behaviorist.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's our 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 Savings V1

Frequently Asked Questions

What Are Insects That Dogs Should Never Eat?

Eating flies won’t do your dog much physical harm. However, dogs may stumble upon other insects and decide to eat them too. Consuming unfamiliar insects may lead to injuries and health problems.

Here’s a list of insects that your dog should never eat:

  • Spiders and scorpions — These insects contain venoms that are harmful to your dog.
  • Stinging insects — Some dogs are allergic to wasps and bees, which is why you should never allow your dog to eat these insects. Dogs may also get stung while trying to eat a wasp or a bee, which could be potentially dangerous for them.
  • Fireflies — These insects contain lucibufagins, a self-defense toxin almost similar to those released by toads. Its toxicity has been documented mainly in reptiles.
  • Cockroaches — These insects are not poisonous but they may carry bacteria and parasites that are best avoided in your dog.
  • Caterpillars — Processionary caterpillars can cause serious health problems to dogs if they touch, lick, or eat them. They are covered in tiny poisonous hairs that cause severe tissue damage

Is There a Cause for Compulsive Fly Eating in My Dog?

Compulsive fly-eating in your dog could be a sign of an underlying issue. Behavioral problems such as anxiety or stress and neurological disease have been described to cause fly-biting behaviors. If you notice it, you should start watching your dog closely and even install a pet camera to monitor them while you are not at home. Do not hesitate to talk to your vet if this behavior persists.

dog owner talking to vet
Image Credit: SeventyFour, Shutterstock

My Dog Is Chasing Flies That Aren’t There, What Should I Do?

If your dog is chasing flies that aren’t actually there, this may be a sign of seizures, digestive disease, or compulsive disorder. 

Chasing non-existent flies may also be a sign of syringomyelia, a neurological disorder caused by abnormal flow of cerebrospinal fluid that can be seen in brachycephalic (short-nosed) toy breeds. Some dogs may also see “phantom flies” due to eye problems or rapid eye movements.

In this situation, it’s essential to speak to your vet, who will perform further testing to see what’s happening with your furry companion.

Final Thoughts

If you see your dog chasing and eating a fly every once in a while, there’s no need to panic, as the behavior is entirely normal. However, if your dog is air-biting or snapping at imaginary flies, it is essential to speak to your vet, as it may indicate a health problem that needs prompt intervention.

Related Reads:


Featured Image Credit: 4924546, Pixabay

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything dog

* 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 Dogster 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

Bow Wow Labs Bow Wow Buddy Review 2026: An Expert’s Breakdown

Many dogs enjoy chewing, and they’ll appreciate chomping on all sorts of chews, like bully sticks, rawhide, and elk antlers. While chewing is...

Why Does My Dog Play With Their Food? 4 Reasons & What to Do

Finding more kibble littered around your house than in your dog’s bowl (or their belly) can leave many dog parents wondering why their...

15 Awesome DIY Dog and Owner Costumes You Can Make Today (With Pictures)

No matter the occasion, choosing a costume is loads of fun, but even more so when coordinating it to include your beloved canine....

Why Is My Female Dog Peeing in Her Sleep? Vet-Reviewed Causes & Tips

As pet owners, we want to keep our pets healthy and happy at all times, and it can be unsettling to find out...

More related

15 Dog Breeds With Docked Tails Naturally: Info, Pictures & History

When we talk about docked tails on dogs, we are usually referring to dogs that have had their tails amputated when they are...

AKC vs CKC vs UKC Registries: The Main Differences

When you’re serious about raising a purebred dog, the assurance of a kennel club registration is impossible to ignore. In the U.S., breeders...

Saint Bermastiff (English Mastiff St Bernard Mix): Info, Pictures, Care & More

Every dog breed has unique personality traits that make them stand out from the rest. So when picking your canine companion, you must...

Seasonal Allergies in Dogs: Signs, Causes, Care & FAQ (Vet Answer)

Ahhh, spring! Flowers and trees are blooming, grass is growing, bees are buzzing, and allergies are in full force for many people, and...

Keep reading

Water Enhancers for Dogs: Vet-Reviewed Info, Pros, Cons & FAQ

Hydration is a key component to having a healthy dog, as a dehydrated dog can become ill, and their body won’t function as it should. You might be desperate to find ways to increase your pet’s liquid intake, which may...

beagle dog drinking water from metal bowl

Can Dogs Have Balsamic Vinegar? Vet-Reviewed Facts You Should Know!

Balsamic vinegar is a delicious condiment that can be used in many types of cuisine in many ways. Whether it’s in dips and sauces or added to a marinade, it’s a tasty addition that adds a sweet “zing” to the...

Can Dogs Eat_balsamic vinegar

10 Best Dog Foods for Labradoodles in 2026 — Reviews & Top Picks

Whether you have just brought a Labradoodle into your home or are a long-time owner, you want the best for your pet. Providing complete nutrition is part of keeping your dog active and healthy. As large dogs, Labradoodles have different...

labradoodle lying on bench

Can Dogs Eat Tangerines? Vet-Approved Facts & FAQ

If you enjoy the sweet, tart taste of citrus fruits like tangerines, you might be tempted to share the delicious goodness with your dog. Fortunately, most dogs can safely eat parts of tangerines in small quantities. In this article, we’ll...

Can Dogs Eat Tangerines

Can Dogs Eat Mint? Vet Approved Facts & FAQ

What do you think of when you think of mint? Fresh breath, spruced-up salads, smoothies, and mojitos. But have you ever wondered if your dog can have mint? Smelly dog breath is a common complaint, so is it okay to...

can dogs eat mint

How Long Can Wet Dog Food Sit Out Until It Goes Bad? Vet-Approved Facts & FAQ

All pet food can only sit out for a limited amount of time before it starts to spoil. The time frame will vary depending on the type of food, as well as the ambient conditions. All dog food can sit...

Border collie holding food bowl

Can Dogs Eat Brown Rice? Vet-Approved Facts & FAQ

Brown rice is an excellent carbohydrate to include in your dog’s diet. It’s seen as one of the more nutritious types of rice that is safe for your canine companion while being easy to digest. Many households have white or...

Can Dogs Eat_Brown Rice

Can Dogs Eat Whipped Cream? Vet-Reviewed Nutrition Facts & Info

Our dogs can eat all sorts of things we can. After all, they are omnivores just like us! However, that doesn’t mean everything we stuff in our gullet belongs in our dog’s belly—or ours, if we’re being honest. So, how...

Love Dogs? So Do We! Join the Dogster 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 Dogster Email Newsletter