Deuteronomy 14
7 Ref But even among these, there are some which may not be used for food: such as the camel, the hare, and the coney, which are unclean to you, because, though their food comes back, the horn of their feet is not parted in two.
8 Ref And the pig is unclean to you, because though it has a division in the horn of its foot, its food does not come back; their flesh may not be used for food or their dead bodies touched by you.