Canine Filariasis is a parasitic disease caused by the filarial worm Dirofilaria immitis, commonly known as heartworm. This disease primarily affects dogs but can also infect other animals. The worms are transmitted through the bites of infected mosquitoes, leading to serious health issues, including heart and lung damage. Symptoms of Canine Filariasis may include coughing, fatigue, and difficulty breathing. If left untreated, the infection can be fatal. Prevention is crucial and typically involves administering monthly heartworm preventatives to dogs, which help protect them from infection and ensure their overall health.