Darrin Lunde worked for more than twenty years as a mammalogist at the American Museum of Natural History and is now the collection manager in the Division of Mammals at the Smithsonian's National Museum of Natural History in Washington, DC. He's written several books introducing animals to children, including the Theodor Seuss Geisel Honor book Hello, Bumblebee Bat, as well as Whose Poop Is That? and other books in the Whose Is THAT? series. Ariel Landy is an educator and illustrator of books for children, including Brand-New Bubbe , Gitty and Kvetch , and the Good Dog series. Ariel began writing and illustrating stories as soon as she could hold a pencil, and she never stopped. She currently lives in France with her husband and their dog, Sid. www.ariellandyart.com.