One bite from a mosquito can give your dog heartworm. Oh my!

Mosquitoes are irritating parasites. Not only are they problematic for people, they can be bothersome to dogs also. One mosquito bite is all it takes for your dog to get heartworm. Heartworm is a parasite that lives in the heart tissue of dogs. Adult worms can become long and tangled like strands of spaghetti.