Have you ever seen a butterfly hatch from a cocoon? That butterfly was once a little caterpillar that ate leaves, grass, flowers and seeds all day long. FInd out how many muscles a caterpillar has in its body and why they need them all. Level Pre-1 readers are aimed at children who are starting to read. Basic language, word repetition and short, simple sentences help kids read with confidence. This project has been made possible in part by the Government of Canada.