The next two sins deal with ceremonial uncleanness. That is, people who contracted impurity by forgetting to purify themselves within the prescribed time. Leviticus 5:2 speaks of ceremonial uncleanness that is incurred by touching the body of a dead animal. It does not matter if the animal is a wild animal or a domestic one.
2 or if anyone touches an unclean thing, whether a carcass of an unclean wild animal or a carcass of unclean livestock or a carcass of unclean swarming things, and it is hidden from him and he has become unclean, and he realizes his guilt;