An 8-yr. decline in muskrat (Ondatra zibethica macrodon) populations and reports from trappers of mink (Mustela vison mink) and otter (Lutra canadensis lataxina) predation provoked a food habit study of these animals. A 4-yr. fall and winter collection of digestive tracts in 1947-48 and 1950-51, and a fall collection of scats in 1950 and 1951 was of material mostly from Currituck County. Of 568 mink digestive tracts, 335 contained food. Fish, mostly killifish (Cyprinodontidae) were found in 61% of the tracts. Mammals (34%) and arthropods (30%), next in importance, were largely comprised of mice (Peromyscus and Microtus) and crayfish (Cambarus),respectively. Of birds (18%), most were small passerines. Among 7 species identified, the king rail (Rallus elegans) was prominent. Other foods were frogs (Rana and Hyla) and snakes (mostly Natrix sp.). Sixteen of the 335 tracts contained muskrat remains. Mammal prey in mink scats constituted more than 70% of the food by frequency of occurrence but muskrats appeared in only one scat. The remainder consisted of birds (small passerines), frogs (Hyla). insects (Coleoptera and Tettigonidae), crayfish, spiders (Arenidae). turtle (Testudinata) and snail (Planorbis). Otter foods both in tracts and droppings were largely fish (forage fish 54%, game fish 46%). Of 24 tracts and 61 droppings, largely representing the winter diet, fish were present in more than 90%. Other otter foods were crayfish, blue crab, water beetles (Dytescidae). birds (mostly king rail), shrimp (Phyllopoda), clam (Pelecypoda). bait and one muskrat.