Heartworms are exactly what they sound like: thin, spaghetti-like worms that can grow up to twelve inches long and that live inside the dog’s heart. Untreated, they can lead to congestive heart failure.
Heartworm disease isn’t a wait-and-see proposition. Prevention is part of taking good care of your dog. Even if your dog spends little time outside, there’s a good chance they’ll become infected…
