Does my indoor dog need to have heartworm prevention? - Prestige Animal Hospital
So there have been studies and some of these studies have shown that even 25% of pets that are indoors can get heartworm. You might ask, “How how can my dog get heartworm if they’re only indoors? The same way that we get mosquito bites and we're indoors; a mosquito can fly inside and bite your pet or feed from your pet. Som yes, even indoor pets can get heartworm or you take your indoor dog for a walk or they go out for potty. So there are cases in which indoor dogs do tend to get heartworm as well, so they also need to be on prevention.
Contributed by Sudeep Wahla DVM
from Prestige Animal Hospital North Fontana