What is a mammal? Young readers will discover simple yet compelling answers in this beautiful board book from the Discovering Nature series created by Cathryn and John Sill. Educator and award-winning author Cathryn Sill introduces toddlers and preschoolers to the concept of mammals using clear, easy-to-understand facts about where they live, what they eat, and how they move. The book features simple, relatable truths like "All mammals...