Comments: Opportunistic feeder. Juveniles eat mainly invertebrates: crayfish, aquatic and terrestrial insects, and mollusks; also small fishes, amphibians, and small mammals. Larger individuals eat vertebrates, including birds, reptiles (infrequently conspecifics), mammals (up to the size of deer), and fishes (USFWS 1980); also observed eating horseshoe crabs in eastern Florida. Smaller prey is swallowed whole; twists off chunks off flesh from larger prey. Digestive system commonly contains small stones.