As pet owners, we go to great lengths to make sure our furry companions are healthy and safe. From routine vet visits to belly rubs and the occasional treat, their wellness is always top of mind. But one silent threat often goes unnoticed until it's too late—heartworm disease. At Home Veterinary Services is using National Heartworm Awareness Month to shine a spotlight on this dangerous yet preventable condition that affects both dogs and cats across the country.
Heartworm Disease and How It Spreads
Heartworm disease is a serious and potentially fatal condition caused by parasitic worms living in the heart and lungs of infected pets. It's primarily spread through mosquito bites. Yes, one single bite from an infected mosquito is all it takes. Every year, over 100,000 dogs in the U.S. are diagnosed with heartworm infections. While dogs are the most common hosts, cats are also at risk, and both can suffer severe health consequences if left untreated.
Once a pet is bitten by an infected mosquito, microscopic larvae enter the bloodstream and travel to the heart and lungs. Over several months, they mature into adult heartworms, causing inflammation, lung disease, and eventually heart failure if untreated. Your pet may not show symptoms until the disease has advanced.
Symptoms of Heartworm Disease in Pets
If you notice any of these signs of heartworm disease, schedule a veterinary visit right away. Early detection can significantly improve the outcome.
Symptoms in Dogs
- Persistent coughing
- Fatigue after mild activity
- Difficulty breathing
- Decreased appetite or weight loss
Symptoms in Cats
- Vomiting
- Coughing
- Sudden collapse
Heartworm Prevention: Testing and Treatment
The good news is that heartworm disease is entirely preventable. A monthly chewable, topical application, or annual injection (depending on your vet’s recommendation) can shield your pet from this life-threatening parasite. Discuss preventative options with your veterinarian for fleas, ticks, and heartworms.
Even pets on preventives should receive annual pet parasite testing. No method is 100% foolproof, and not all pet owners remember to give their pets preventatives on a year-round schedule. Early detection is pivotal to effective treatment. If a cat or dog tests positive, treatment will depend on the severity of the infection and the pet’s overall health.
5 Key Reasons to Prevent Heartworm Disease
- Heartworm disease is expensive to treat—but easy to prevent.
- Once infected, treatment can be lengthy, painful, and potentially risky.
- Prevention medications are safe and highly effective.
- Mosquitoes are present year-round in many areas.
- Untreated heartworm can be fatal for both dogs and cats.
Discuss Heartworm Risks with Our House Call Vet
Heartworm disease may be a quiet threat, but our collective awareness and action can keep our beloved pets safe. This National Heartworm Awareness Month, At Home Veterinary Services commits to protecting dogs and cats from this preventable illness. We encourage pet owners to stay proactive, ask questions, and never skip a dose of prevention. Have questions or need to talk to a veterinarian about heartworm prevention? Contact us for at-home veterinary care in the greater Seattle area, including Bellevue, Renton, Kirkland, Redmond, Issaquah, and beyond.