What do a bullfrog, a salamander, and a toad have in common? Theyâre all amphibians! But do you know what makes an amphibian an amphibian? Read this book to find out! Learn all about reptiles, insects, mammals, and other animal groups in the Meet the Animal Groups series - part of the Lightning Bolt Booksâą collection. With high-energy designs, exciting photos, and fun text, Lightning Bolt Booksâą bring nonfiction topics to life!