The puma is the apex predator - the king - of Patagonian wilderness. Still, overgrazing and hunting nearly wiped out this majestic feline from most of its native habitat across the region. Now, over the past three decades, like the mountain lions of North America, this once threatened species is making a comeback. Jim Williams, author of a new book on pumas and wildlife program manager for Montana, writes about Conservación Patagonica and their work researching and conserving pumas in Patagonia National Park in Chile and in an interview with Patagon Journal also discusses lessons learnt and the challenges ahead in the effort to protect this species.