Mystery Science Theater 3000 (1989)

S4E7 The Killer Shrews

Inside the theater, the crew observes the chaos as the residents of a small island face off against oversized, genetically modified killer shrews, which are humorously portrayed by dogs in masks in the film "Killer Shrews" (1959). At the same time, on the Satellite of Love, Joel experiences an unpleasant side effect from his Killer Shrew beverage, a reaction mirrored by TV's Frank in Deep 13.