This story appears in the March 2009 issue of National Geographic magazine. (Update: Big cats can protect humans from the rise of future pandemics. See more in National Geographic News.) At dusk ...

A symbol of the enigmatic power of the Amazon, the jaguar is the largest cat in the Americas. Jaguars have unusually large, round heads, short legs and a stunning coat dotted with dark rosettes and ...

Filly, a jaguar from Belize who arrived here earlier this year, has "successfully transferred" to her habitat in the ...

In the heart of the wild, where nature’s symphony is at its peak, big cats roam with a grace and power that commands respect ...

TUCSON, Ariz.— A wild jaguar shown in a recent trail camera video from southern Arizona is a new jaguar not previously identified in the state. The images captured last month by a wildlife enthusiast ...

SILVER CITY, N.M.— The Center for Biological Diversity petitioned the U.S. Fish and Wildlife Service today to reintroduce jaguars to the Southwest. The largest cat in the Americas was put on the ...

The 5-month-old cub, Lacumba III, is the first jaguar born at Baton Rouge Zoo in more than 30 years. She also was the first ...