Midrash su Deuteronomio 14:5

3) (Vayikra 11:2): "This is the animal that you may eat, of every beast that is upon the earth": One declaration replaces another. From (Bereshith 9:3): "As the green herb, I have given you (the sons of Noach) everything," I might assume that everything was permitted; it is, therefore, written (Devarim 14:4): "This is the beast that you may eat: the ox, the lamb of sheep, and the kid of goats, (Devarim 14:5) the hart, the gazelle, and the fallow deer, and the wild goat, and the dyshon, and the wild ox, and the chamois."

(Lev. 11:1-2) “Then the Lord spoke unto Moses…, saying, ‘… these are the creatures that you may eat….’” Let our master instruct us: How many [types of] pure animals are there are in the world? Thus have our masters taught: There are ten beasts: “The deer, the gazelle, the roebuck, the wild goat, the ibex, the antelope, the mountain sheep”; (Deut. 14:5) “the ox, the sheep and the goat” (Deut. 14:4). There are no more than these in the world. Said the Holy One, blessed be He, “Guard yourselves, not to defile yourselves with an impure beast and with an impure swarming creature.” So did David say (in II Sam. 22:31 = Ps. 18:31), “As for God, His way is perfect, the word of the Lord is pure (rt.: tsrp).” Thus, the commandments were given only to purify (rt.: tsrp) [mortals] through them. They said to him. “Rabbi, what does the Holy One, blessed be He, care whether one ritually slaughters cattle and eats [the meat] or whether one slaughters cattle by stabbing and eats it? Will some such thing benefit Him (i.e., the Holy One, blessed be He,) or harm Him?” Know that this ritual slaughter was given only to purify (rt.: tsrp) Israel. As in the future to come, the Holy One, blessed be He, will make a meal for the righteous from the behemoth and the leviathan, and there is no ritual slaughter there. Know that the leviathan is an unusual creature, and the angels fear him, as stated (in Job 41:17), “From his rising do the powers fear.” And if they throw many spears of iron upon him, he considers them like straw, as stated (in Job 41:19), “He considers iron like straw.” And also the behemoths of my fields are harsh, as it crouches on a thousand mountains as stated (in Psalms 50:10), “the behemoths on a thousand mountains.” And [so] how are they slaughtered? Rather, they come and fight, one with the other, as stated (in Job 41:8), “One approaches to the other.” The behemoths approach the leviathan and hold him by his horn and split him, and the leviathan’s death [that he inflicts] will be the opposite, as he smites him with his tail and kills him. [Then] the righteous ones go and all take portions. From here [we see] that ritual slaughter was given only to examine and to purify (rt.: tsrp) Israel.

8) This is the animal that you may eat of every beast that is on the land.": We are hereby taught that "beast" is in the category of animal. Whence is it derived that "animal," too, is in the category of "beast"? From (Devarim 14:4): "This is the beast that you may eat: the ox, the lamb of sheep, and the kid of goats, (Devarim 14:5) the hart, the gazelle, and the fallow deer, and the wild goat, and the dyshon, and the wild ox, and the chamois." (The latter mentioned are animals.)