El Jefe, Tucson’s lone male jaguar, caught the attention of Arizonans while residing in a tree in Southeastern Arizona. For three years, pictures from trail cameras flooded conservationists’ computers ...

They call him "El Jefe," he is at least 12-years-old, and his crossing of the heavily guarded U.S.-Mexico border has sparked celebrations on both sides. "El Jefe" – or "The Boss" – is one of the ...

At 4:00 p.m. on Sunday, Aug. 7, Mt. Auburn Street lost a beloved giant of popular Harvard Square chains. The iconic, delectable El Jefe’s moved from its original spot by Tasty Burger to a larger, more ...

PHOENIX - A famous jaguar known to have roamed the mountains in southern Arizona has been spotted for the first time in years south of the border. "El Jefe" was spotted in Sonora, Mexico, about 120 ...

A controversial plan to build a mine in the territory of El Jefe — the sole jaguar known to be roaming in the U.S. — has prompted the Tucson-based Center for Biological Diversity to sue the U.S. Fish ...

TUCSON, Ariz. (KGUN) — Tucson cat lovers are about to get a new way to experience cats and coffee together: El Jefe Cat Lounge on Campbell Avenue near Fort Lowell Road is planning an expansion.