Fur flies as the puma launches her attack on the guanaco. For Ingo Arndt, the picture marked the culmination of seven months tracking wild pumas on foot, enduring extreme cold and biting winds in the Torres del Paine region of Patagonia, Chile. For half an hour, Arndt watched this female puma creep up on the large, male guanaco. When the puma was within about 30 feet, she sprinted and jumped. As her claws made contact, the guanaco twisted to the side, his last grassy mouthful flying in the wind. The puma then leapt on his back and tried to deliver a crushing bite to his neck. Running, he couldn’t throw her off, and it was only when he dropped his weight on her, seemingly deliberately, that she let go, just missing a kick that could easily have knocked out her teeth or broken bones. Four out of five puma hunts end like this—unsuccessfully.