Episode Title:The Crood Who Knew Too Much / Scent of a Thunk.Episode Description:The Crood Who Knew Too Much: After getting a giant head from a Spiderant bite, everybody is convinced that Grug is now completely intelligent and he uses this to outstrip Snoot's role as Ahhh! Valley's Problem Solver.
Scent of a Thunk: After making a spectacle of himself, Thunk is forced to change his ways.