The Grant's gazelle (Nanger granti, syn. Gazella granti) is named for Lieutenant-Colonel James Augustus Grant (1827-1892), a 19th-century Scottish explorer of eastern equatorial Africa. Adult males are seen as the largest gazelle concerning body weight. Grant's raise their body temperature during the day when it's the hottest meaning it sweats less and loses less precious water. This enables them to extend their range into regions where they don't have to compete with herbivores that have to eat regularly.