Adults can run bipedally on land. Juveniles can run on land and over water. Mainland Central and South America. Near large bodies of water. Sleep in trees or rock crevices, emerge and bask for an hour, then search for food the rest of the time.
Females migrate en masse to egg-laying sites.
Dig elaborate burrows with labyrinthine tunnels. Egg laying takes place in February or March. 25 to 40 eggs are buried 12 inches deep in moist sand or soil. They need a steady temperature of approximately 85 F to develop. Incubation is approximately 60 days.