In Louisiana and Mississippi, heartworm disease isn’t just a risk, it’s a guarantee. The hot, humid climate creates the perfect breeding ground for mosquitoes, and where there are mosquitoes, there’s heartworm.
Whether you share your life with a bouncy dog or an independent cat, protecting your pet year-round from heartworm is essential. Skipping prevention even for a month can have devastating consequences.
What Is Heartworm Disease?
Heartworm disease is a serious, potentially fatal condition caused by parasitic worms that live in the heart, lungs, and blood vessels of affected animals. It’s transmitted by mosquitoes, which pick up microscopic larvae (called microfilariae) from an infected animal and pass them on to the next pet they bite.
Once inside the new host, the larvae grow into foot-long worms that damage the heart, lungs, and surrounding organs. By the time symptoms appear, the disease is already advanced, and treatment is difficult, expensive, and hard on your pet.
Why Prevention Matters
Here’s the truth: if you live in Louisiana or Mississippi and your dog is unprotected, they will get heartworm. There are just too many mosquitoes and too much exposure for that not to happen.
Fortunately, heartworm disease is preventable with monthly medication or injections given every six or 12 months. These preventives kill the larvae before they can grow and cause harm. That’s why consistency is critical.
The biggest mistake pet owners make? Forgetting a dose. Even one missed month can allow larvae to mature, starting the cycle of irreversible damage.
Why Year-Round Prevention?
Some people believe they can stop giving heartworm medication in the winter. But in the Deep South, mosquitoes don’t take the season off, and neither should prevention. A single warm snap is all it takes to trigger mosquito activity. Year-round prevention ensures your pet is protected, no matter the weather.
Heartworm in Dogs: What to Know
Dogs are the natural hosts for heartworms, and infections can range from mild to life-threatening. Symptoms include:
- Coughing
- Fatigue after exercise
- Weight loss
- Difficulty breathing
- Swollen belly due to fluid buildup
Severe cases require a painful and expensive treatment process that includes strict cage rest for months, and even then, recovery isn’t guaranteed.
That’s why monthly prevention is far easier, cheaper, and more compassionate than treatment.
Heartworm in Cats: The Hidden Risk
Many people don’t realize that cats can get heartworm too. Although they’re not the ideal host, cats can become infected. Because there’s no approved treatment for heartworm in cats, prevention is even more important.
Symptoms in cats can be subtle or resemble other illnesses:
- Vomiting
- Coughing or asthma-like attacks
- Loss of appetite
- Sudden death, in rare cases
While indoor cats are at slightly lower risk, they’re not immune. All it takes is one mosquito in your home to put your cat in danger.
Feline heartworm prevention comes in topical or oral forms, often combined with flea prevention. Ask your vet about the right option for your cat.
Let’s Protect the Pets Who Count on Us
At SpayMart, we work every day to rescue and care for cats and dogs, many of whom come to us after being left unprotected against preventable diseases like heartworm. We’ve seen firsthand how painful this disease can be. It’s why we urge all pet owners to take heartworm prevention seriously.
If your pet isn’t already on prevention, talk to your vet today.
One mosquito can change everything. One monthly pill can save a life.