Zoo Med's Tortoise Block is designed to function as a calcium supplement for your tortoise's regular diet, while helping to prevent overgrowth of their beak. It contains a mixture of nutritious vegetables including Opuntia Cactus, carrots, and alfalfa encapsulated in a solid calcium block. Provides stimulation and enrichment to tortoises, as they eagerly chew away the block to access the tasty treats within.