Shemoth [Exodus] 22:30 (31), " ' and men, set apart, you will be to me, and flesh, in the field, which is torn, you will not eat it, to the dog you will throw it.' "

Shemoth 34:26 b, "  'you will not boil a young goat in the milk of its mother.' "

Wayyiqra [Leviticus] 7: 26, 27, " 'and you will not eat any blood in all your dwellings, of fowl, or of animal.  any nefesh who eats any blood, even that nefesh will be cut off from his people.' "

Wayyiqra 11:1-23, " '¹ and YHWH spoke to mosheh and to aharon, saying to them,  ² speak to the sons of yisrael, saying, these are the living things which you will eat out of all the animals which are on the earth.  ³ any that divides the hoof and is wholly cloven footed, bringing up the cud, among the living things, you may eat it.  ⁴ only, you may not eat these, of those bringing up the cud, and of those dividing the hoof, the camel, though it brings up the cud, yet it does not divide the hoof; it is unclean to you;  ⁵ and the rock badger, though it brings up the cud, yet it does not divide the hoof; it is unclean to you;  ⁶ and the hare, though it brings up the cud, yet it does not divide the hoof; it is unclean to you;  ⁷ and the swine, though it divides the hoof and is cloven footed, yet it does not bring up the cud; it is unclean to you.  ⁸ you will not eat of their flesh, and you will not touch their dead body; they are unclean to you.  ⁹ of all that are in the waters, you will eat these; any one that has fins and scales in the waters, in the seas, and in the torrents, you may eat them.  ¹⁰ but any one that does not have fins and scales in the seas, and in the torrents, of any swarming creature of the waters, and of any creature which lives in the waters; they are to be detested by you.  ¹¹ yes, they will be detested by you; you will not eat of their flesh and you will shun their dead bodies.  ¹² any one that does not have fins and scales in the waters, it will be an unclean thing to you.  ¹³ and these you will count unclean among the fowls; they will not be eaten; they are unclean, the eagle, and the black vulture and the bearded vulture, ¹⁴ and the kite, and the falcon, according to its kind;  ¹⁵ every raven according to its kind;  ¹⁶ and the ostrich, and the great owl, and the gull, and small hawks, according to its kind;  ¹⁷ and the little owl, and the cormorant, and the eared owl;  ¹⁸ and the barn owl, and the pelican and the owl vulture;  ¹⁹ and the stork, the heron according to its kind, and the hoopoe, and the bat.  ²⁰ every flying swarming creature going on all four, it is an abomination to you.  ²¹ only, this you may eat of any swarming thing which flies, which goes on all four, which has legs above its feet, to leap with them on the earth;  ²² these are those you may eat, the locusts according to its kind, and the bald locust according to its kind, and the long horned locust according to its kind, and the short horned grasshopper according to its kind.  ²³ but every swarming thing which flies, which has four feet, it is unclean to you.' "

Wayyiqra 11:41-43, " '⁴¹ and every swarming thing which swarms on the earth is unclean; it will not be eaten.  ⁴² anything going on its belly, and any going on all four, and all having many feet, even every swarming thing that swarms on the earth, you will not eat them, for they are unclean.' "

Wayyiqra 11:46,47, " '⁴⁶ this is the thorah of the animals, and of the fowl, and of every living creature which moves in the waters, and every creature which swarms on the earth,  ⁴⁷ to make a distinction between the unclean and the clean, and between the living thing that may be eaten and the living thing that may not be eaten.' "

HaDebariym [Deuteronomy] 12:23, " ' only, be sure not to eat the blood, for the blood the life, and you do not eat the life with the flesh.' "

HaDebariym 14:3-21, " '³ you will not eat any abominable thing.  ⁴ this the beast which you may eat, ox, lamb of the sheep, or kid of the goats,  ⁵ hart, and roe, and fallow deer, and wild goat, and pygarg, and wild ox, and chamois.  ⁶ and every beast dividing the hoof, and cleaving the cleft into two hoofs, bringing up the cud, among the beasts, it you may eat.  ⁷ only, this you will not eat, of those bringing up the cud, and of those dividing the cloven hoof, the camel, and the hare, and the rabbit, for they are bringing up the cud but the hoof have not divided; unclean they to you.  ⁸ and the sow, for it is dividing the hoof, and not up the cud, unclean it to you; of their flesh you do not eat, and against their carcase you do not come.  ⁹ this you may eat of all that in the waters; all that has fins and scales you may eat.  ¹⁰ and anything which has not fins and scales you will not eat; unclean it to you.  ¹¹ any clean bird you may eat. ¹² and these are they of which you will not eat, the eagle, and the ossifrage, and the ospray.  ¹³ and the glede, and the kite, and the vulture after its kind.  ¹⁴ and every raven after its kind.  ¹⁵ and the owl, and the nighthawk, and the cuckoo, and the hawk after its kind.  ¹⁶ the owl, and the owl, and the swan.  ¹⁷ and the pelican, and the gier-eagle, and the cormorant.  ¹⁸ and the stork, and the heron after its kind, and the lapwing, and the bat.  ¹⁹ and every teeming thing which is flying, unclean it to you; they are not eaten.  ²⁰ any clean fowl you may eat.  ²¹ you will not eat of any carcase; to the ger who is within your gates you may give it, and he has eaten it; or sell to a stranger; for a set apart people you to YHWH your elohey; you will not boil a kid in its mother's milk.' "

Clean beasts are those ruminants that have a split hoof and chew the cud.

Clean fowl are those that have a crop,  a gizzard which can easily be peeled away, and an extra talon.

Clean fish are those that have fins and scales.