Discover Series Books for Babies & Toddlers They're warm! They're furry! Mammals are cute and cuddly and live in habitats all over the world. In this picture book from Xist Publishing, clear and crisp images of mammals each have a title beneath the pictures so you'll be sure to teach your kids the difference between a doe and a dog. Used as a jumpstart for interaction, Discover Series Picture Books are a great way to introduce new images, words and concepts to kids. Use this photo dictionary as a learning tool. Each photo has a clear title beneath it for identification. Language learners, children, and people looking to build their vocabulary can use this simple book to learn new words.