The large rats that are common to dungeons, remote keeps and even some castles can sometimes be driven to gather into groups. Sometimes this will result in two or more getting their tails tangled in such a way that a bit feces, blood, hair, or dirt could make the knot permanent. A giant rat king is when several of these large rats are entangled but learn to move, and hunt, as one. Instinct: To Feed and Grow

• Gnashing in All Directions
• Spring from the Shadows