Caring for a pet is one of life’s most rewarding responsibilities—and protecting their health is a big part of that. While heartworm disease might not be top of mind during every vet visit, it should be. At Brown Animal Hospital, we know how devastating this preventable disease can be, which is why we believe in education and prevention. Understanding how heartworms spread to cats and dogs and how to prevent it could make all the difference for your beloved companion.

Understanding the Heartworm Threat

Heartworm disease is caused by a parasitic worm—dirofilaria immitis—transmitted through mosquito bites. Once infected, these worms grow and live in the heart, lungs, and blood vessels of your pet. Over time, they cause lasting damage that can lead to heart failure, severe lung disease, and even death. The number of reported cases of heartworm disease in South Carolina veterinary clinics is high. While dogs are the most common hosts, cats and other mammals can also be affected. The scary part? Infected animals often show no signs of illness until the disease has progressed significantly.

Heartworm Prevention Medications for Dogs and Cats

Heartworm disease is difficult and costly to treat once it has developed. The medications used in treatment can be tough on your pet’s body, require strict activity restrictions for several months, and come with risks. The emotional toll it takes on pet owners and their families can also be immense.
Fortunately, heartworm prevention is simple, safe, and effective. There are several types of heartworm preventatives available for cats and dogs, and each works slightly differently. Some also protect against other parasites like roundworms, hookworms, fleas, and ticks.
The most common heartworm prevention options include:

• Monthly oral tablets
• Topical applications applied to the skin
• Annual injectable preventatives administered by your veterinarian

We recommend consulting with your vet during a pet wellness exam to find the most suitable option for your pet’s age, size, health condition, and lifestyle.

Heartworm FAQs

“Does my indoor cat need heartworm prevention?”
Yes. Even indoor pets can be bitten by mosquitoes that get inside your home.

“Is year-round prevention necessary?”
Absolutely. Mosquitoes can survive in milder climates year-round, and missing even one dose can leave your pet vulnerable.

“Can my pet be tested for heartworm?”
Yes, and all pets should be tested annually—even if they’re on prevention. It’s a safety net to catch any lapses or medication resistance early.

Talk to a Vet About Heartworm at Brown Animal Hospital Today!

Heartworm prevention might feel like just another item on your pet care checklist, but it’s truly a lifesaving measure. With a simple monthly habit and an annual test, you’re giving your pet the best chance at a healthy life. At Brown Animal Hospital, we can guide you in choosing a heartworm preventative to keep your pet on track all year long.

Protect your pet in the Lake City, SC area before the risk gets real. Contact us to schedule a heartworm test or consultation about the right parasite prevention plan.