February 3, 2016 - Newly released camera-trap footage captured in the Santa Rita Mountains just outside Tucson, Arizona, reveals a jaguar that scientists have been tracking for three years. The jaguar—known locally as "El Jefe," which translates to "the Boss"—is the only one currently known to inhabit the U.S. The species, which is classified as near threatened by IUCN, hasn't been widely spotted in the Southwest since the late 19th century. El Jefe is believed to have come from the closest breeding population, which is located in Sonora state, Mexico, more than 125 miles (200 kilometers) to the south.Click here to read more:Video courtesy Conservation CATalyst and the Center for Biological Diversity