Leviticus 11:24, 28, 31, 39

And by these ye shall become unclean: whosoever toucheth the carcass of them shall be unclean until the even

And he that beareth the carcass of them shall wash his clothes, and be unclean until the even: they are unclean unto you.

These are they which are unclean to you among all that creep: whosoever doth touch them, when they are dead, shall be unclean until the even.

And if any beast, of which ye may eat, die; he that toucheth the carcass thereof shall be unclean until the even.