Scimitar-horned Oryx

Scimitar-horned oryx are elk-sized antelope of the Sahara and Sahel, mostly white with a rust-brown neck and chest, dark face markings, a long dark-tufted tail, and — on both sexes — long ringed horns that sweep back over the body in a curve, the only oryx whose horns bend backward rather than running straight. They're desert animals to the core, letting body temperature climb to around 116°F rather than sweating away water, grazing at night when plants hold the most moisture, and going long stretches without a drink. Hunting, drought, and civil unrest finished off the wild herds by the late 1980s, and for more than twenty years the species carried an extinct-in-the-wild listing; captive-bred animals released in Chad since 2016 have re-established a free-ranging herd, and it's now assessed as Endangered. Most of the thousands living on ranches outside Africa descend from a few dozen founders taken from Chad.