משנה אויף ויקרא 20:15

Cases concerning offenses punishable by death [are decided] by twenty three. A beast that has sexual relations with a woman or with a man is [judged] by twenty three, as it says, “You shall execute the woman and the beast” (Lev. 20:16) and it says, “You shall execute the beast”. The ox that is stoned [is judged] by twenty three, as it says, “The ox shall be stoned and also its owner shall be put to death” (Exodus 21:29), as is the death of the owner, so too is the death of the ox. The wolf, the lion, the bear, the leopard, the panther, or serpent [that have killed a human being] their death is [adjudicated] by twenty three. Rabbi Eliezer says: “Anyone who kills them before they come to court merits.” But Rabbi Akiva says: “Their death must be [adjudicated] by twenty three.

If a person slaughtered [a wild animal or a bird] and it was found to be terefah, or if he slaughtered [it as an offering] to idols, or if he slaughtered that which was unconsecrated inside the sanctuary or that which was consecrated outside, or if he slaughtered a wild animal or a bird that was condemned to be stoned: Rabbi Meir makes him liable to cover up the blood; but the sages make him exempt. If he slaughtered [a wild animal or a bird] and it became nevelah under his hand, or if he stabbed it, or tore away [the organs of the throat], he is exempt from covering up [the blood].