细粒棘球绦虫是食肉动物主要是狗的一种绦虫。狗的粪便里常含有脱落的成熟头节及卵。乡村地区散播在牧场的卵通常被羊食入,也可被牛或其它易感动物所食。在中宿主,幼虫或六钩蚴进入肝并由肝转移到肺或其它器官,在这些器官六钩蚴发育成包虫囊,当中宿主被杀,内脏常被食肉动物摄食,循环得以继续进行。 Echinococcus granulosus is a tapeworm predominantly carnivore in dogs. Dog’s excrement often contains shedding of mature head and eggs. Eggs scattered in pastures in rural areas are usually consumed by sheep and also by cattle or other susceptible animals. In the host, larvae or cercariae enter the liver and are transferred by the liver to the lungs or other organs, where cysts develop into hydatid cysts, where the host is killed and the viscera is often ingested by carnivores and the cycle continues.