Rat Hair

The Rat Hair is an item used for either transforming into or summoning a Rat. Mixing it with Mandragore creates a potion for transforming into a Rat, while combining it with Berries makes a potion to summon a Rat.
It can be aquired by killing a rat, or transforming into a Rat and stealing the hair.
Adolescent rats have a small chance of dropping a tiny amount.
Adult rats have a small chance of dropping a few.
Restless rats instead have a small chance to drop a tiny amount of Restless Bone.