Heartworm disease in dogs is spread by mosquitoes and is spread by the parasite Dirofilaria immitis. Signs include cough, difficulty breathing, and death.

• 心蠕虫病是由蚊子传播的疾病，病原为犬恶丝虫。临床症状有咳嗽、呼吸困难、甚至死亡。