Although the lists aren't exhaustive, He reveals guidelines for recognizing animals that are acceptable for food.
God states that cud-chewing animals with split hooves can be eaten (Leviticus 11:3; Deuteronomy 14:6). These specifically include the cattle, sheep, goat, deer and gazelle families (Deuteronomy 14:4-5
). He also lists such animals as camels, rabbits and pigs as being unclean, or unfit to eat (Leviticus 11:4-8
). He later lists such "creeping things" as moles, mice and lizards as unfit to eat (verses 29-31), as well as four-footed animals with paws (cats, dogs, bears, lions, tigers, etc.) as unclean (verse 27).
He tells us that salt and freshwater fish with fins and scales may be eaten (verses 9-12), but water creatures without those characteristics (catfish, lobsters, crabs, shrimp, mussels, clams, oysters, squid, octopi, etc.) should not be eaten.
God also lists birds and other flying creatures that are unclean for consumption (verses 13-19). He identifies carrion eaters and birds of prey as unclean, plus ostriches, storks, herons and bats.
Birds such as chickens, turkeys and pheasants are not on the unclean list and therefore can be eaten. Insects, with the exception of locusts, crickets and grasshoppers, are listed as unclean (verses 20-23).