What did your guinea pig's great-great-great-great-great-grandparents look like? Paleontologist Dr. Dean Lomax takes a close look at seven of our favorite pets

Not dinosaurs, but mammoths, sloths and sabre-tooth tigers feature in this large-format pop-up picture book, with brief text describing the environment, probabl

Each book In the innovative Illustrate This Book series includes warm-up activities, a book planner, stickers, and visual prompts from real-life illustrators en