Perissodactyla is an order of mammals known as odd-toed ungulates. This group includes animals like horses, zebras, and rhinoceroses. They are characterized by having an odd number of toes on their feet, typically one or three. These animals are primarily herbivorous and have specialized teeth for grinding plant material. The order is divided into three main families: Equidae (horses and zebras), Rhinocerotidae (rhinoceroses), and Tapiridae (tapirs). Perissodactyls are important for their roles in ecosystems, as they help maintain plant communities and serve as prey for larger predators.