The Radiated Tortoise (Astrochelys radiata) is one of the most visually striking tortoise species, renowned for its beautifully patterned shell. Native to the southern parts of Madagascar, this species is characterized by the radiating yellow lines on its dark, dome-shaped carapace, which give it its name. These intricate patterns are not just for show—they help the tortoise camouflage in its natural environment, blending with the sun-dappled ground of the island's dry forests. The species can live for over 100 years, making it one of the longest-lived tortoises. Despite their longevity, Radiated Tortoises face significant threats from habitat destruction and poaching, as they are highly sought after in the illegal pet trade and for food.

Radiated Tortoises have a fascinating social structure, often interacting with one another more than most other tortoise species. During the breeding season, males can be seen competing for the attention of females, often engaging in mild head-butting and pushing matches. These tortoises are herbivorous, with a diet consisting mainly of grasses, succulent plants, and fruit, though they are particularly fond of the prickly pear cactus, which provides them with much-needed hydration in their arid habitats. Due to their highly specific environmental needs and protected status, keeping Radiated Tortoises in captivity requires advanced knowledge and is heavily regulated. There is an urgent need for conservation efforts to preserve this iconic species.