Rat's tail

A Rats tail is used in the Monstercrafting skill. When its used with an Empty monster box and 10 Monster fragments it combines to make a House rat box giving 10 Monstercrafting xp. It can be found as a very common drop from rats only after the player has completed the It's Alive! quest. It is usually confused with a rat's tail which is used in the Witch's Potion quest.