Leviticus 11:24, 28, 31, 39

Those insects will make you unclean, and anyone who touches the dead body of one of these insects will become unclean until evening.

Anyone who picks up their dead bodies must wash his clothes and be unclean until evening; these animals are unclean for you.

These crawling animals are unclean for you; anyone who touches their dead bodies will be unclean until evening.

“ ‘Also, if an animal which you use for food dies, anyone who touches its body will be unclean until evening.