Minnesota Veterinary Hospital Blog
Heartworm disease causes serious complication in dogs and cats and can even be fatal to them. The heartworm is approximately one foot long and lives inside the lungs, heart, and blood vessels of affected animals. In addition to house pets, heartworms may be found in ferrets, coyotes, wolves, sea lions, and foxes. Wild species are thought to be a primary carrier of heartworm disease. When left untreated, heartworms can cause heart failure and severe lung disease as well as damage to internal organs.