Heartworm Disease in Pets: What Mattoon Pet Parents Should Know

Heartworm disease might not be the most glamorous topic at the dog park or in your cat’s Instagram captions, but it’s one of the most serious (and preventable!) health threats your pet can face. Whether your best friend is a tail-wagging retriever or a mysterious, aloof tabby, understanding this parasite and how to prevent it is vital.

At Clyde’s Animal Clinic, we’re all about keeping tails wagging and purrs strong in Mattoon, IL and the surrounding areas. Let’s dig into what heartworm disease really is, how pets get it, and—most importantly—how you can protect your four-legged family members.

What Is Heartworm Disease in Pets?

Heartworm disease is caused by a parasite called Dirofilaria immitis. It’s transmitted by mosquitoes and primarily affects dogs, though cats are also at risk. Once infected, adult heartworms can live in the heart, lungs, and associated blood vessels, leading to severe damage, lung disease, and even heart failure.

Why It’s So Dangerous

Heartworms are sneaky little parasites. By the time pets show symptoms, the disease is often advanced. And while treatment is possible for dogs, it’s lengthy, expensive, and potentially risky. For cats, there’s no approved treatment at all—only prevention.

How Do Pets Get Heartworm?

One bite from an infected mosquito is all it takes. That’s right—just one. In Mattoon’s warmer months, mosquitoes thrive, and heartworm transmission increases. When a mosquito bites an infected animal, it picks up microscopic baby heartworms (called microfilariae). These develop inside the mosquito and are then transmitted to another host through a bite.

Dogs and Cats: Different Risks, Same Concern

• Dogs are natural hosts. Heartworms mature fully and reproduce inside a dog’s body, often going undetected for months.
• Cats are atypical hosts. Heartworms rarely mature, but even immature worms can cause serious inflammation and respiratory distress.

Indoor pets are not safe either—mosquitoes are sneaky houseguests!

Signs of Heartworm in Dogs and Cats

Unfortunately, symptoms often don’t appear until the disease is well established. That’s why routine screening is crucial.

Signs of Heartworm in Dogs:

• Persistent cough
• Lethargy or reluctance to exercise
• Weight loss
• Difficulty breathing
• Swollen belly (from fluid buildup)

Signs of Heartworm in Cats:

• Coughing or asthma-like symptoms
• Vomiting
• Loss of appetite
• Sudden collapse or death in severe cases

If your pet shows any of these signs, don’t wait—schedule a visit with Clyde’s Animal Clinic right away.

Diagnosing Heartworm Disease

The good news? A quick blood test can detect heartworm in dogs. We recommend annual screening even for pets on prevention—no medication is 100% foolproof.

Diagnosing cats is trickier. Blood tests, X-rays, and ultrasounds are often needed. Because cats may show no signs until it’s too late, prevention is considered the best (and only) protection. Learn more about heartworms and associated symptoms at the American Heartworm Society here. The Heartworm Society also has quite a bit of helpful information on their website here.

Heartworm Prevention Tips That Actually Work

The absolute best weapon against heartworm disease is year-round prevention.

Here’s how to protect your pets:

• Monthly Preventatives: These come in chewable tablets, topical solutions, or injections. They kill the larvae before they mature into adult worms.
• Year-Round Protection: Even during colder months, it’s wise to keep your pet protected. Mosquitoes are hardy!
• Routine Testing: Annual testing is recommended for dogs, even if they’re on preventatives.

At Clyde’s Animal Clinic, we carry trusted heartworm preventatives and can help you choose the right one for your dog or cat.

Why Heartworm Prevention Is Worth Every Penny

Prevention costs about the same as a few coffee runs each month. Treating a heartworm-positive dog, on the other hand? You’re looking at hundreds—or even thousands—of dollars, not to mention the toll on your pet’s health. And remember, for cats, there’s no approved treatment—only heartbreak.

FAQs About Heartworm Disease

Can indoor pets get heartworms?

Yes. Mosquitoes can easily enter homes, so even indoor cats and dogs are at risk.

Do I really need to give preventatives year-round?

Yes. Even in winter, unpredictable warm snaps can allow mosquitoes to survive. Prevention should be consistent.

Is heartworm contagious between pets?

No. It’s spread only through mosquito bites—not pet-to-pet contact.

Can puppies and kittens start on prevention?

Absolutely. Puppies can start as early as 6–8 weeks. Kittens, too—your vet will recommend a product and schedule.

Keeping Pets Safe in Mattoon, IL

Here in Mattoon, mosquito season isn’t just a nuisance—it’s a risk to your pet’s heart health. But with help from the team at Clyde’s Animal Clinic, heartworm disease is one danger you can fully prevent.

We believe prevention should be simple, affordable, and part of every pet’s wellness routine. Whether your pet needs a refill on preventatives, a screening test, or their first dose—we’re here for it all.

Take Action Today

Don’t wait for symptoms. Book your pet’s heartworm screening or prevention consultation today at Clyde’s Animal Clinic in Mattoon, IL. Give your furry family member the healthy heart they deserve! For more information about our clinic and the pets we treat, visit our Service page here.

Disclaimer

This blog is for informational purposes only and does not replace professional veterinary advice. Always consult your veterinarian before starting any treatment or prevention plan.