animals that part the hoof and chew the cud
Kosher animals Leviticus 11:3-8 and Deuteronomy 14:4-8 both give the same general set of rules for identifying which land animals (Hebrew: בהמות Behemoth) are ritually clean. According to these, anything that "chews the cud" and has a completely split hoof is ritually clean, but those animals that only chew the cud or only have cloven hooves are unclean.