He only said that to Israel and for the specific purpose of separating Israel from the rest of the world and keeping them separate. As a gentile Christian I can dine uninhibited with Thanksgiving.
Obviously, it says if you don't obey you are abominable, are you abominable? 43: Ye shall not make yourselves abominable with any creeping thing that creepeth, neither shall ye make yourselves unclean with them, that ye should be defiled thereby. 44: For I am the LORD your God: ye shall therefore sanctify yourselves, and ye shall be holy; for I am holy: neither shall ye defile yourselves with any manner of creeping thing that creepeth upon the earth. 45: For I am the LORD that bringeth you up out of the land of Egypt, to be your God: ye shall therefore be holy, for I am holy. 46: This is the law of the beasts, and of the fowl, and of every living creature that moveth in the waters, and of every creature that creepeth upon the earth: 47: To make a difference between the unclean and the clean, and between the beast that may be eaten and the beast that may not be eaten.