When best friends Catvinkle and Ula are asked to defend two sheep accused of eating Amsterdam’s tulips, they’re not sure what to believe. The sheep say they’re innocent, but they do look very sheepish. To win this case, Catvinkle will need the help of a wolfhound, a llama, two travelling koalas, a pair of Russian bears … and a very special bird. ‘An instant children’s classic’ Sunday Age