Mazel tov! You've been appointed to a commission to determine whether dragons are kosher or not. In order to guide you, here are some texts.
זֹ֤את הַֽחַיָּה֙ אֲשֶׁ֣ר תֹּאכְל֔וּ מִכׇּל־הַבְּהֵמָ֖ה אֲשֶׁ֥ר עַל־הָאָֽרֶץ׃ (ג) כֹּ֣ל ׀ מַפְרֶ֣סֶת פַּרְסָ֗ה וְשֹׁסַ֤עַת שֶׁ֙סַע֙ פְּרָסֹ֔ת מַעֲלַ֥ת גֵּרָ֖ה בַּבְּהֵמָ֑ה אֹתָ֖הּ תֹּאכֵֽלוּ׃
These are the creatures that you may eat from among all the land animals: (3) any animal that has true hoofs, with clefts through the hoofs, and that chews the cud—such you may eat.
What are the rules for determining if a land animal is kosher?
(ט) אֶת־זֶה֙ תֹּֽאכְל֔וּ מִכֹּ֖ל אֲשֶׁ֣ר בַּמָּ֑יִם כֹּ֣ל אֲשֶׁר־לוֹ֩ סְנַפִּ֨יר וְקַשְׂקֶ֜שֶׂת בַּמַּ֗יִם בַּיַּמִּ֛ים וּבַנְּחָלִ֖ים אֹתָ֥ם תֹּאכֵֽלוּ׃
(9) These you may eat of all that live in water: anything in water, whether in the seas or in the streams, that has fins and scales—these you may eat.
What are the rules for determining if a water animal is kosher?
(יג) וְאֶת־אֵ֙לֶּה֙ תְּשַׁקְּצ֣וּ מִן־הָע֔וֹף לֹ֥א יֵאָכְל֖וּ שֶׁ֣קֶץ הֵ֑ם אֶת־הַנֶּ֙שֶׁר֙ וְאֶת־הַפֶּ֔רֶס וְאֵ֖ת הָעׇזְנִיָּֽה׃ (יד) וְאֶ֨ת־הַדָּאָ֔ה וְאֶת־הָאַיָּ֖ה לְמִינָֽהּ׃ (טו) אֵ֥ת כׇּל־עֹרֵ֖ב לְמִינֽוֹ׃ (טז) וְאֵת֙ בַּ֣ת הַֽיַּעֲנָ֔ה וְאֶת־הַתַּחְמָ֖ס וְאֶת־הַשָּׁ֑חַף וְאֶת־הַנֵּ֖ץ לְמִינֵֽהוּ׃ (יז) וְאֶת־הַכּ֥וֹס וְאֶת־הַשָּׁלָ֖ךְ וְאֶת־הַיַּנְשֽׁוּף׃ (יח) וְאֶת־הַתִּנְשֶׁ֥מֶת וְאֶת־הַקָּאָ֖ת וְאֶת־הָרָחָֽם׃ (יט) וְאֵת֙ הַחֲסִידָ֔ה הָאֲנָפָ֖ה לְמִינָ֑הּ וְאֶת־הַדּוּכִיפַ֖ת וְאֶת־הָעֲטַלֵּֽף׃
(13) The following you shall abominate among the birds—they shall not be eaten, they are an abomination: the eagle, the vulture, and the black vulture; (14) the kite, falcons of every variety; (15) all varieties of raven; (16) the ostrich, the nighthawk, the sea gull; hawks of every variety; (17) the little owl, the cormorant, and the great owl; (18) the white owl, the pelican, and the bustard; (19) the stork; herons of every variety; the hoopoe, and the bat.
What are the rules for determining if an air animal is kosher? Think about what these listed birds eat.