The Nubian ibex (Capra nubiana) is a desert-dwelling goat species found in mountainous areas of Algeria, Jordan, Saudi Arabia, Oman, Egypt, Ethiopia, Eritrea, Yemen, and Sudan. It is generally considered to be a subspecies of the Alpine ibex (Capra ibex), but is sometimes considered specifically distinct (Capra nubiana). The wild population is estimated at 1,200 individuals. https://en.wikipedia.org/wiki/Nubian_ibex
They are also found in the Sudan desert, but Sudan has a range of climates where different types of animals can live and survive. The four species are only found in the Sudan desert where certain types of animals can not survive. The four species are endangered with just very few specimens still left in the wild.