Bearded dragons can eat spinach, but it should only be given occasionally and in small amounts. Spinach is rich in calcium and vitamins, which are beneficial to bearded dragons. However, it also contains oxalates, which can bind to calcium and hinder its absorption. This can potentially lead to calcium deficiency and metabolic bone disease in bearded dragons if spinach is consumed in large quantities or too frequently. To ensure your bearded dragon remains healthy, it's essential to provide a varied diet that includes a mix of vegetables, fruits, and insects. Leafy greens like collard greens, mustard greens, and turnip greens are safer alternatives that can be fed more regularly. Always wash vegetables thoroughly before feeding and consult with a reptile veterinarian to ensure your pet's diet meets all nutritional requirements. Moderation and variety are key to keeping your bearded dragon healthy and happy.