Do Flies Lay Eggs In Water

So, there I was, minding my own business, enjoying a sunny afternoon in my backyard. I had just finished cleaning up after a barbecue, and I was feeling pretty proud of myself. But then, I saw it. A fly, buzzing around my freshly filled water bowl for my dog. I watched, fascinated and slightly horrified, as it landed on the water's surface, seemed to consider its options for a moment, and then... plop! It laid an egg. Right there, in the middle of my dog's water bowl.

Now, I'm no expert on flies, but I was pretty sure that wasn't supposed to happen. So, I did what any curious, slightly grossed-out person would do. I grabbed my phone, snapped a picture (because, you know, evidence), and started googling. And that, my friends, is how I ended up down a rabbit hole of fly facts, and discovered that yes, flies can indeed lay eggs in water. But it's not as simple as it seems.

Meet the Aquatic Flies

It turns out, not all flies are created equal. While most flies prefer to lay their eggs in decaying organic matter (which, let's face it, is pretty gross), there's a whole group of flies that have adapted to lay their eggs in water. These are the aquatic flies, and they're a lot more interesting than your average housefly.

Take the midge, for example. These tiny flies are often found hovering over water in swarms, and the females lay their eggs on the water's surface. The larvae that hatch are aquatic, and they spend their time filtering tiny particles of organic matter from the water. Pretty neat, huh?

Then there's the mosquito. We all know about these little vampires, but did you know that they lay their eggs on the surface of stagnant water? The larvae that hatch are aquatic, and they spend their time filtering tiny particles of organic matter from the water. Okay, so maybe that's not so neat when you consider the whole "they bite us and give us diseases" thing.

How Do Flies Lay Eggs In The House at Kate Terry blog

But What About Houseflies?

Now, back to my fly friend from the barbecue. Houseflies, like the one I saw, are not aquatic flies. They prefer to lay their eggs in decaying organic matter, like trash cans, compost piles, and... well, dog poop. So, why did that fly lay an egg in my dog's water bowl?

The short answer is, I don't know. But the long answer is, it's probably because houseflies are not picky. They'll lay their eggs wherever they can, and if they're desperate enough, that might include water. But here's the thing - housefly larvae can't survive in water. So, while that egg might have hatched, the larva wouldn't have been able to develop into a fly in my dog's water bowl.

Do Crane Flies Lay Eggs In Water at April Falbo blog

So, Should We Be Worried?

If you're like me, you're probably wondering if you should be worried about flies laying eggs in your pet's water bowl. The short answer is, probably not. While it's gross, and you should definitely clean your pet's water bowl regularly, the chances of a housefly laying eggs in it and the larvae surviving are pretty low.

But here's the thing - flies are vectors for disease. They can carry all sorts of nasty stuff, like E. coli and Salmonella, from one place to another. So, while you might not need to worry about fly larvae in your pet's water bowl, you should still be careful about flies around your food and your pet's food.

And if you do see a fly laying an egg in your pet's water bowl? Well, now you know what to do. Grab your phone, snap a picture, and google away. Just don't forget to clean the bowl afterwards.