Dave Watts / Tasmanian Devil (Sarcophilus harrisii) running blur, Cradle Mountain, Tasmania, Australia

Dave Watts / Tasmanian devil portrait {Sarcophilus harrisii} taken in the wild, Tasmania. Endangered species.

John Cancalosi / Tasmanian devil (Sarcophilus harrisii) captive, Tasmania, Australia

Martin Willis / Tasmanian Devil (Sarcophilus harrisii) pair, Tasmania, Australia

Martin Willis / Tasmanian Devil (Sarcophilus harrisii) trio fighting over meat, Tasmania, Australia

Martin Willis / Tasmanian Devil (Sarcophilus harrisii) scavenging on Eastern Grey Kangaroo (Macropus giganteus) carcass near Arthur River, the last remaining area unaffected by the fatal facial tumor, western Tasmani...

Martin Willis / Tasmanian Devil (Sarcophilus harrisii) killed on road, Tasmania, Australia

Martin Willis / Tasmanian Devil (Sarcophilus harrisii), Tasmania, Australia

Martin Willis / Tasmanian Devil (Sarcophilus harrisii) carrying away piece of carcass, Woodbridge, Tasmania, Australia

Roland Seitre / Tasmanian Devil (Sarcophilus harrisii) playing with its handler. Captive. Gosford, New South Wales, Australia.

Roland Seitre / Tasmanian Devil (Sarcophilus harrisii) nibblig its handler. Captive. Gosford, New South Wales, Australia. Sequence 2 of 2.

Roland Seitre / Tasmanian Devil (Sarcophilus harrisii) sniffing its handler. Captive. Gosford, New South Wales, Australia. Sequence 1 of 2.

Rolf Nussbaumer / Blue-throated Hummingbird (Lampornis clemenciae) male feeding on flowering Claret Cup Cactus (Echinocereus triglochidiatus) Chisos Basin, Chisos Mountains, Big Bend National Park, Chihuahuan Desert, W...

Jack Dykinga / Silhouette of Mexican Pinyon pine tree on the Chisos Mountain ridge in fog, Big Bend National Park, Texas, USA

Jack Dykinga / Aerial view of Rio Grande passing through the Boquillas Canyon with the Chisos Mountains and Big Bend National Park in the background, Texas, USA on right of river, Mexico on left of river.

Jack Dykinga / Agave {Agave havardiana} plant at sunset with Chisos Mountains in the background, Big Bond National Park, Texas, USA

Jack Dykinga / Soaptree Yuccas (Yucca elata) in flower amid Big Bend Bluebonnet (Lupinus harvardii), dawn, Chisos Mountains, Big Bend National Park, Texas

Tim Fitzharris / Agave (Agave sp) plants and Chisos Mountains seen from Chisos Basin, Big Bend National Park, Chihuahuan Desert, Texas

Rolf Nussbaumer / Sunset, The Window, Chisos basin, Big Bend National Park, Texas, USA.

Rolf Nussbaumer / Big Bend NP, Chisos mountains, Texas, . {Ocotillo sp}

B&S Draker / Horse Lubber Grasshopper (Taeniopoda eques) adult on cactus. Chisos Mountains, Big Bend National Park, Chihuahuan Desert, West Texas, USA, August.

Rolf Nussbaumer / Yellow-rumped Warbler (Dendroica coronata) perched on stone amongst wildflowers, Chisos Basin, Chisos Mountains, Big Bend National Park, Chihuahuan Desert, West Texas, USA

Rolf Nussbaumer / View of 'The Window' at sunset. This is an opening between two peaks which plays an important role in preserving Chisos Basin's ecosystem. Chisos Mountains, Big Bend National Park, Chihuahuan Desert,...

Rolf Nussbaumer / Scott's Oriole (Icterus parisorum) male perched on Guayacan (Guaiacum angustifolium) Chisos Basin, Chisos Mountains, Big Bend National Park, Chihuahuan Desert, West Texas, USA