The mountains that border the north side of my city of Tucson (Arizona, USA) used to be habitat for desert bighorn sheep. But by the time I moved here two decades ago, they had essentially disappeared. I found out today from a fellow docent they will be reintroduced - great news!
Reintroducing Bighorn Sheep into the Catalinas - Southern Arizona Guide
Reintroducing Bighorn Sheep into the Catalinas - Southern Arizona Guide