Summer brings longer days, warmer temperatures, and unfortunately, more mosquitoes. While mosquito bites are often just a nuisance for people, they can pose a serious health risk to dogs and cats. Mosquitoes are the primary carriers of heartworm larvae, making this the time of year when pet owners should be especially vigilant about protecting their furry family members.
Heartworm disease is caused by parasitic worms that are transmitted through the bite of an infected mosquito. Once inside a pet’s body, the larvae mature and eventually travel to the heart, lungs, and surrounding blood vessels. Over time, these worms can cause severe damage to vital organs, leading to heart disease, lung disease, and, in severe cases, death.
Dogs are the natural host for heartworms, making them particularly vulnerable to infection. Infected dogs may not show symptoms right away, but as the disease progresses, they can develop a persistent cough, fatigue, difficulty exercising, weight loss, and breathing problems. Because heartworm disease can be life-threatening, early detection and prevention are essential.
Cats are also at risk, although heartworms behave differently in feline patients. Even a small number of worms can cause serious respiratory problems, vomiting, decreased appetite, or sudden collapse. Unfortunately, there is currently no approved medication to eliminate adult heartworms in cats, making prevention even more important.
The good news is that heartworm disease is largely preventable. Monthly heartworm preventives, available as chewable tablets, topical medications, or injections for dogs, are highly effective when given as directed. Your veterinarian can recommend the best option based on your pet’s age, health, and lifestyle.
Annual heartworm testing is another important part of preventive care for dogs. Even pets receiving preventive medication should be tested regularly to ensure the medication is working as intended and that no infection has occurred. Cats are not routinely screened in the same way, but your veterinarian can discuss appropriate preventive care based on your pet’s individual risk.
In addition to using heartworm prevention year-round, reducing mosquito exposure can provide extra protection. Eliminate standing water around your home where mosquitoes breed, keep pets indoors during peak mosquito activity when possible, and make sure window and door screens are in good condition.
Heartworm disease is far easier and safer to prevent than it is to treat. If your pet is due for a heartworm test, preventive medication, or a wellness examination, we’re here to help. Contact our animal hospital to schedule an appointment and keep your dog or cat protected throughout mosquito season and beyond.