2 - Anyone who eats some of its carcass must wash their clothes, and they will be unclean till evening.
The law indicates that eating "some of its carcass" ( dead sheep ) results in uncleanness but the law also forbade eating dead animals: "must not eat"
vs
There was no law against eating an animal found already dead as I proved with the quotes from Lev.11 and Lev.17. cofty