'I Wonder Why Kangaroos Have Pouches' and other questions about baby animals, from Kingfisher books. Rrp £5.99 so get it for LESS than half price here! Colourful, surprising and full of information, the I Wonder Why books have set thousands of young minds buzzing. I Wonder Why Kangaroos Have Pouches is the perfect introduction to baby animals, featuring tall babies, naughty babies, cosy nests and more. Glossy paperback. Approx 28cm x 23cm.