How Do Dogs Get Heartworm? Plus 10 Symptoms You Need to Know

Dog running on a path surrounded by rocks and flowers

Heartworm disease is a serious and potentially fatal condition that affects dogs. Caused by the parasitic worm Dirofilaria immitis, this disease attacks a dog’s heart, lungs, and blood vessels, leading to severe complications if left untreated, according to the Cornell Richard P. Riney Canine Health Center. Many pet owners have heard of heartworm, but not […]