Are hookworms contagious to other dogs?

Hookworms aren’t just a nuisance for your pup—they’re a tricky parasite that can pass between dogs more easily than you might think. These tiny worms live in a dog’s intestines, feeding on blood, and their larvae have a knack for finding new hosts. When an infected dog poops, those larvae end up in the soil, grass, or even your backyard patio. That’s where the trouble starts.

A healthy dog sniffing around the yard, rolling in the grass, or even just walking through contaminated areas can pick up hookworm larvae. They burrow through the skin—often between the toes—and make their way into the bloodstream, eventually settling in the intestines. Puppies are especially vulnerable, sometimes getting them from their mother’s milk or through the soil in their whelping area.

In many European countries and U.S. states, there are strict rules about pet health that tie into parasite control. For example, some regions require regular fecal tests for dogs in communal spaces like parks or kennels to prevent the spread of hookworms and other parasites. Ignoring these guidelines can lead to fines, and more importantly, put other dogs at risk. It’s not just about following the law—it’s about being a responsible neighbor in the dog community.

Preventing hookworm spread starts with simple habits. Clean up your dog’s waste immediately—don’t leave it in the yard or on sidewalks. Regular deworming treatments prescribed by your vet are a must, especially if your dog spends time around other pups at daycare or dog parks. Washing your hands after handling your dog, especially before touching other pets, can also cut down on accidental transfer, though hookworms rarely affect humans.

If you notice signs like diarrhea, weight loss, or pale gums in your dog, it could be a hookworm infection. Getting treatment right away not only helps your dog recover but stops the cycle of transmission. Remember, a healthy dog is less likely to spread parasites, so staying on top of vet check-ups and following local health regulations isn’t just good practice—it’s part of being a caring dog owner.

Hookworms thrive in warm, moist environments, so be extra vigilant during spring and summer months when larvae are most active. A little effort in prevention goes a long way in keeping your dog and the entire neighborhood pack safe from these pesky invaders.