Heartworm — Let’s Talk About It
Heartworm is one of those topics that can sound big and overwhelming — but when we break it down, it really comes down to mosquitoes, prevention, and protecting our pets’ hearts and lungs. Heartworm is a parasite that spreads through — you guessed it — mosquito bites. Not from other dogs, not from sharing bowls, not from that random dog at the park. Just mosquitoes doing what mosquitoes do. If a dog becomes infected, the worms can grow in the heart and lungs, which is why vets take it seriously. Here’s the encouraging part though: 👉 Heartworm is much easier to prevent than it is to treat — and prevention is one of the kindest things we do for our pets. 🌎 Who Can Get Heartworm? Some animals are much more at risk than others. 🐕 Highest Risk — Dogs & Their Wild Cousins Dogs Coyotes Foxes Wolves Heartworm grows very well in these species. That’s why prevention in dogs matters so much — it protects your dog and helps reduce risk in the environment. 🐱 What About Cats? Cats can get heartworm, but it behaves differently than in dogs. They usually don’t develop large worm loads — but even a few worms can inflame the lungs, which can still cause illness. And yes… indoor cats can meet mosquitoes (they’re tiny house ninjas with wings). In many areas, vets recommend prevention for cats too. 🐹 Other Animals Sometimes Affected Occasional infections have been found in: Ferrets Raccoons Otters Mink / weasels Sea lions Bears (rare) 🚫 Who Does Not Get Heartworm Birds Reptiles Humans 🧪 How Heartworm Testing Works (Even If Your Dog Is on Prevention) Here’s a question a lot of pet parents ask: “If my dog is on prevention, why do we still need the yearly heartworm test?” Totally fair question — and I love when people ask it. Prevention is very effective… but life happens. 🐾 Doses get: spit out thrown up given late not fully absorbed or accidentally missed …and sometimes we don’t realize it. That’s why most dogs get a small blood test once a year. It’s quick, routine, and helps us make sure prevention is doing its job, catchs infections early before damage occurs and keeps treatment safer if we ever need it.