Etiology:  Mice serve as intermediate hosts for the cat tapeworm Taenia taeniaformis.

Incidence:  The incidence of parasitism is rare.

Transmission:  Infection occurs when mice ingest ova from food or bedding contaminated with cat feces.

Clinical Signs:  There are no clinical signs.

Pathology:  The cysticercoid cyst (Cysticercus fasciolaris) embeds in the liver.