Mamma Moo and Crow are characters written by Jujja and Thomas Wieslander, and illustrated by Sven Nordqvist. Mamma Moo is a warm, curious and playful cow who wants to discover the world and try everything kids get to do – climb, swing, swim and sing. Her best friend Crow is sceptical, easily frightened and cares deeply about what other people think. He always knows how “things are supposed to be”, and loves to pontificate on this subject to Mamma Moo.