Many mammals are unique, especially when it comes to what's going on inside their bodies. Kangaroos, bats, elephants, and other mammals each have special internal body parts that help them function every day. This book gives readers a look at these animals' interesting insides. Colorful diagrams, paired with simple labels and descriptions of the animal's key components, provide a unique and accessible take on important life science curricula. Curious minds will be satisfied and excited by the insight they gain from this thrilling volume.