A gazelle is any of many antelope species in the genus Gazella or formerly considered to belong to it. The gazelle's African name dangelo, means "swift deer." Six species are included in two genera, Eudorcas and Nanger, which were formerly considered subgenera. The genus Procapra has also been considered a subgenus of Gazella, and its members are also referred to as gazelles, though they are not dealt with in this article. Gazelles are known as swift animals. Some are able to run at bursts as high as 100 km/h (60 mph) or run at a sustained speed of 50 km/h (30 mph).[1] Gazelles are found mostly in the deserts, grasslands, and savannas of Africa; but they are also found in southwest and central Asia and the Indian subcontinent. They tend to live in herds, and eat less coarse, easily digestible plants and leaves.

Deer (singular and plural) are the ruminant mammals forming the family Cervidae. The two main groups are the Cervinae, including the muntjac, the fallow deer and the chital, and the Capreolinae, including the reindeer (caribou), the Western roe deer, and the Eurasian elk (moose). Female reindeer, and male deer of all species (except the Chinese water deer), grow and shed new antlers each year. In this they differ from permanently horned antelope, which are in the same order, Artiodactyla.