As its name implies, heartworm lives in the heart and blood vessels of the lungs of these animals. (clearlakevetclinic.com)
Heartworms generally mature into mating adults in the large blood vessels of the lungs and, in more severe infections, the right ventricle of the heart.2 These areas can become clogged with worms, resulting in a number of health issues, including but not limited to liver and kidney failure, heart failure and even death.2 An infected dog typically carries microfilariae within six to seven months after infection from the initial mosquito bite.2 And the cycle continues. (trifexis.com)
Heartworms are «foot long» worms that live in the heart and major blood vessels of the lungs. (catclinicofjc.com)