Definitive hosts: this species infects a variety of mammals, especially ruminants Site of infection: bile ducts and gall bladder Typical size: 15-30 mm in length Distribution: Worldwide Intermediate host: several species of lymnaeid snails serve as suitable hosts, including Pseudosuccinea columella and Fossaria bulimoides in Kansas. One sporocyst and two redial generations occur. Metacercariae: encystment on a variety of aquatic vegetation