What should I feed my Sulcata tortoise to ensure its overall health and well-being? This fascinating creature, known for its impressive size and distinct shell, requires a specific diet to thrive in captivity. Considering their natural habitat in arid regions, would a diet rich in fibrous grasses and leafy greens suffice? How crucial is the balance between these plant-based foods and the need for certain vitamins and minerals? Do Sulcata tortoises benefit from the occasional addition of fruits, or could this lead to undesirable health issues? Furthermore, how often should I provide these food items, and what portion sizes are appropriate for different age groups? Is it necessary to offer supplements, such as calcium and vitamin D3, to prevent common ailments? Additionally, how do environmental factors, such as temperature and humidity, influence their dietary requirements? What signs of nutritional deficiency should I be vigilant about? Understanding these elements is vital for nurturing a healthy Sulcata tortoise.