What vertebrate group is a horse?

A horse is a vertebrate and belongs to the mammalian group of vertebrates. Mammals are characterized by their mammary glands, which produce milk for their young, as well as their fur and the ability to maintain a constant body temperature. Horses are specifically classified as members of the Perissodactyla order, which includes hoofed mammals that have an odd number of toes, including zebras and tapirs.