Leviticus 11:24-28, 39-40

“And by these you shall become unclean. Whoever touches their carcass shall be unclean until the evening, and whoever carries any part of their carcass shall wash his clothes and be unclean until the evening. Every animal that parts the hoof but is not cloven-footed or does not chew the cud is unclean to you. Everyone who touches them shall be unclean. And all that walk on their paws, among the animals that go on all fours, are unclean to you. Whoever touches their carcass shall be unclean until the evening, and he who carries their carcass shall wash his clothes and be unclean until the evening; they are unclean to you.

“And if any animal which you may eat dies, whoever touches its carcass shall be unclean until the evening, and whoever eats of its carcass shall wash his clothes and be unclean until the evening. And whoever carries the carcass shall wash his clothes and be unclean until the evening.