Managing the extraordinary longevity and specific welfare needs of giant tortoises in zoo settings, with lessons from conservation programs.
Giant tortoise welfare in captivity requires matching the remarkably specialized dietary, thermal, and environmental needs of species that evolved in specific island ecosystems. The dietary challenge is most commonly mismanaged — giant tortoises that receive high-protein, high-sugar foods develop metabolic bone disease and organ pathology that shortens their extraordinarily long potential lifespan. Correct diet consisting primarily of high-fiber vegetation, hay, and appropriate native plant species is the foundation of giant tortoise welfare. Thermal management requires temperatures consistently in the range of 25-35 degrees Celsius with access to basking areas. Their social complexity means appropriate group management with compatible individuals rather than solitary housing improves behavioral welfare.