Heartworm prevention is essential for pets, particularly dogs and cats, to protect them from a serious and potentially fatal disease caused by parasitic worms. These worms are transmitted through the bite of an infected mosquito. Regular use of preventive medications, available in various forms such as pills, topical treatments, or injections, can effectively keep pets safe from heartworm infection. Veterinarians recommend starting heartworm prevention early in a pet's life and continuing it year-round, even in colder months when mosquitoes are less active. Regular check-ups and testing for heartworm are also important to ensure that pets remain healthy and free from this disease.