The addax is a desert nomad with broad flat hooves to allow them to walk well over loose sand. Both males and females have horns, which reach up to 3½ feet long, though they are generally longer in males. Their summer coat is a light white coat to help shed excess heat, while their winter coat is a darker grey coat to help absorb heat from the sun. As an adaptation for living in the desert, addax are able to get almost all the water they need to function from the plants they eat. It’s believed that antelope like addax and oryx may have given rise to the myth of the unicorn. When viewed in profile, the horns line up in such a way as to appear that they have only a single horn. They are listed as a critically endangered species.