Gazelles are graceful, long-legged antelopes found in Africa, Asia, and Europe. They are known for their swiftness and agility, and can reach speeds of up to 80 kilometers per hour. Ariel is the name of a genus of gazelle, which includes four species: the Arabian gazelle, the goa, the mountain gazelle, and the rhim gazelle. Antelopes are a group of even-toed ungulates that also includes goats, sheep, and cattle. Goas are small antelopes found in the Middle East and North Africa.