The largest living species of tortoise, the Galapagos tortoise is native to seven of the Galapagos Islands. They are ectothermic (meaning cold-blooded) and spend 1-2 hours basking in the sun before spending another 8-9 hours grazing and relaxing. Throughout the 19th century, Galapagos tortoises were valued by sailors as part of their food supply; […]