Cheeky polar cub startles seals and puffins with polar pranks, his "BOO!" booming till a walrus wallop whacks wisdom into his woolly woes. Vengeful victims flip the fright, teaching turnabout's tidal chill in a snowy scrum of comeuppance. Ross's robust roars rumble Walliams's boisterous bounce, a brisk bestseller booting boundaries for boisterous bear cubs.
