Bones reveal many facts about the animals from which they come, making them a great hands-on educational tool. For several years, the Saint Louis Zoo has offered a summer course on bones, where children in grades three to five learn how animals move, what they eat, and how big they grow by examining and making inferences about bones. This article describes how the authors used this program to shift away from the typical “show and tell” format to a more inquiry-based approach when presenting animal lifestyles.