Why do pygmy sloths only eat leaves?

Pygmy sloths primarily eat leaves due to their specialized diet, which allows them to thrive in their mangrove forest habitat. Leaves provide the necessary nutrients and energy for their slow metabolism, and their low-calorie content supports their unique adaptations for a sedentary lifestyle. Additionally, the leaves they consume, particularly from the red mangrove tree, are rich in fiber and help them digest the tough plant material. This dietary specialization also minimizes competition with other species for food resources.