Felkrash is a woman found next to The Face in Port Sarim, north of Gerrant's Fishy Business. She is involved in the Rat Catchers quest and will turn players' overgrown cats into wily cats after the quest is complete. During the quest, she is revealed to be none other than the famous pied piper.
She will also rename a player's cat after the completion of the Rat Catchers quest (for up to 6 characters long).
The update history project is a work-in-progress – not all updates to this topic may be covered below. See here for how to help out!