How do you tame a Shadowmane?
To tame a Shadowmane, you must sneak up on it (crouch while wearing a Ghillie Suit or having consumed Cactus Broth) while it is sleeping. Feed it a Filled Fish Basket of at least 0.5x size. The type of fish does not matter and the level of the fish does not matter. Note that fish sizes in ARK are rounded.