The barrel cactus is a type of cactus that is easily recognized by its cylindrical shape, resembling a barrel. It typically grows in arid regions of the southwestern United States and Mexico. These cacti can reach heights of up to 10 feet and are covered in spines that protect them from herbivores. They store water in their thick, fleshy stems, allowing them to survive long periods of drought. Barrel cacti produce vibrant yellow or red flowers that bloom in the spring and summer. The flowers attract pollinators like bees and birds. Additionally, some species of barrel cactus produce edible fruit, which can be consumed by both wildlife and humans.