A feline with a heart-shaped object in its mouth, highlighting the importance of heartworm preventatives for cats.

Recommended Heartworm Preventatives for Cats

Understanding Heartworm Disease in Cats Cat heartworm disease is a potentially life-threatening parasitic infection caused by Dirofilaria immitis worms. The disease primarily affects the blood vessels, heart, and lungs and is transmitted through the bite of an infected mosquito. Although heartworm disease is less common in cats than dogs, feline heartworm infections can still severely…