104. The Northern Jaguar Preserve: Where the great cats roam freely

A little over one hundred miles south of the U.S-Mexico borders in the state of Sonora, international conservation groups have discovered the ideal habitat for jaguars, mountain lions, and ocelots. Through their efforts, former cattle ranches in some of the roughest country in North America now belong to these top predators, who leave their images on cameras that now document populations of the secretive beasts. The photographs reveal jaguars so at home in the region that researchers have given them names.