The scimitar-horned oryx (Oryx dammah) was declared extinct in the wild in 2000 following decades of hunting. One of the largest coordinated wildlife reintroductions in history returned oryx to Chad's Ouadi Rimé-Ouadi Achim Game Reserve — with over 500 oryx released since 2016 from zoo populations. Individual welfare is monitored via GPS satellite collars. Calves born in the wild demonstrate successful establishment. This represents one of conservation's most ambitious and welfare-attentive reintroduction programs.
The addax (Addax nasomaculatus) — adapted to survive in extreme desert with minimal water — is critically endangered with fewer than 100 wild individuals remaining in Niger and Chad. The species' welfare is threatened by hunting, oil exploration disturbance, and climate-driven habitat degradation. Captive populations in zoos and private collections exceed wild numbers; reintroduction planning is active.
The northwest African cheetah (Acinonyx jubatus hecki) is the world's rarest cheetah subspecies, with fewer than 250 individuals surviving in Algeria, Niger, Benin, Burkina Faso, and Mali. The subspecies is extremely poorly studied due to remote habitat and political instability. Camera trap research has documented small populations; welfare concerns include livestock conflict and retaliatory killing.
Small populations of desert-adapted elephants survive in the Saharan fringe — notably in Mali and Namibia's Damaraland. These populations range hundreds of kilometers between water sources and have adapted behavioral and physiological characteristics. Mali's elephants complete an annual 500km migration — the longest elephant migration documented. Welfare threats include drought intensification reducing water source availability.