Keep in mind, this is in regards to what God says, and not man-made traditions.
Now, we know what animals are clean and unclean because the Scriptures record God telling Moses what animals are clean and unclean. HalleluYah!
No. Wrong. God told Moses what was clean and unclean for Hebrews - just Hebrews - the Torah exclusively applies to Hebrews. All of the laws given at Sinai were given to Hebrews, and to no other human beings on earth at that time. The law against murder had already been given.
You are not a Hebrew. There is NO LAW AT ALL for you at Sinai.
To Noah - God gave all animals to man to eat. That's the law. Jesus repeated it.
The cleanliness laws themselves only applied to Hebrews. Nobody else in the world made himself unclean before or after Christ by eating pork, because "unclean" applied exclusively to Hebrews, and it only applied to participation in the rituals, in which nobody but Hebrews was invited to participate.
Sinai was a covenant - a contract, because God and Hebrews - just Hebrews, not anybody else. God did not promise the Hebrews anything in that covenant but a farm in Israel in this life. That's it. That's all. There is not a single reference in the Torah to any promise of life after death, resurrection - none of it.
The covenant was - You do all of these things, I give you a farm in Israel. You stop doing them, I take the farm back.
That's it, and that's all.
None of that ever applied to you and me. Our ancestors did not become unclean by eating scallops cordon bleu, and neither do we.