Packy Savvenas, also known as the Greek Mountain Man is a wildlife photographer who developed a passion for Yellowstone and the Grand Tetons when he was a child, and that passion has driven him to photograph the national parks throughout his life. He's been able to track and photograph several different species (the likes of grizzly bears, moose, mountain lions, owls, and all those that can be found in our national parks), as well as across the world.