We're in a burned-out area of Yellowstone National Park, miles from any road, surrounded by hundreds of acres of fire-blackened lodgepole pines, the hooves of our 17-animal pack train kicking up dust.

FORBES: Magazine Article

Beneath the waters swam the dreaded red-bellied piranha, the pack-hunting fish whose jagged teeth can strip the flesh from an animal in minutes.

BBC: Taming the heart of the Peruvian Amazon