Bumm Bumm Biber

The beaver and the squirrels are playing their favorite game. Will you join in? Some of the trees by the lake have been gnawed by the beaver. If only the squirrels knew which ones! They happily jump from treetop to treetop. Who will be the first to circle the lake with their squirrels? But beware: from time to time, the beaver suddenly slaps the lake with its tail, creating a wave and causing some gnawed trees to sway...