Jaguars are the largest native American cat. They once roamed much of the Southwest, but when ranchers took cattle to the region in the last century, the jaguars were trapped and hunted to extinction in the United States. The last known resident female was killed in 1963 near the Grand Canyon.

Jaguars were thought to be gone from the Southwest until Warner Glenn, a cattle rancher and mountain lion hunter, saw a live one in the Peloncillos Mountains, near the New Mexico border with Mexico, on March 7, 1996.