Book excerpt: Tadpole loves his rainbow friend, the caterpillar, and she tells him she loves everything about him. "Promise that you will never change," she says. But as the seasons pass and he matures, his legs grow, and then his arms - and what happens to his beautiful rainbow friend? As he sits on his lily pad, digesting a butterfly, Tadpole little realises that now he will never know! Follow the predictable changes of a tadpole and a caterpillar to their natural conclusion in this award winning picture book.