This is a picture book about a pair of twins and their bedtime game of Noah's Ark. After being told the story they pretend to be a pair of animals - in bed they are noisy as elephants, in bed they are a couple of monkeys, they jump about like kangaroos - but when their Dad comes upstairs, he puts them back to bed and the twins curl up together like two little mice and fall asleep. In this book there are full page pictures of the twins in action , complemented on the opposite page by vignettes of the animals they are imitating. Laurence and Catherine Anholt's previous books include "Good Days, Bad Days", "What I Like, Kids" and "Here Come the Babies".