My vet said that it looked like roundworms but that using the heartworm preventative that I have should have prevented that.

Heartworm disease is a common and life-threatening cardiovascular disease caused by a worm parasite — Dirofilaria immitis, which is spread by more than two dozen mosquito species. Vets in the ...

Pet deworming, deworming schedule for dogs, deworming for cats, intestinal worms in pets, parasite control in pets, pet ...