Find out what a leatherback sea turtle has in common with a pig-nosed turtle. Learn what sets a leatherback sea turtle apart from a Gila monster. Readers will compare and contrast key traits of leatherback sea turtles-their appearance, behavior, habitat, and life cycle-to similar and different reptiles. Charts and sidebars support key ideas and provide details. Through gathering information about similarities and differences, readers will make connections and draw conclusions about what makes this animal a reptile and how reptiles are alike and different from each other.