The slurk exudes a slippery grease from its belly that grants it a +4 bonus on Escape Artist skill checks and to its CMD versus grapples. Once per minute, a slurk may wallow on a solid surface as a full-round action to coat the floor in a 5-foot radius with this grease. The smear created turns that area of floor into difficult terrain for 10 minutes, after which the grease dries to a nasty crust.