A tale of two foxes. Surprising behaviour, witnessed in Wapusk national park, on Hudson Bay, Canada, in early winter. Red foxes don’t actively hunt Arctic foxes, but where the ranges of two predators overlap, there can be conflict. Though the light was poor, the snow-covered tundra provided the backdrop for the moment that the red fox paused with the smaller fox in its mouth in a grim pose. (Photo by Don Gutoski/2015 Wildlife Photographer of the Year)

A girl carries on her head a pile of dried shrubs she gathered for cooking and heating, in Kabul, Afghanistan November 18, 2015. (Photo by Omar Sobhani/Reuters)

In this November 28, 1966 file photo, one of the 10 beagles involved in the first test of the Veterans Administration Hospital in East Orange, N.J. smokes a cigarette through a machine linked to its windpipe by a plastic tube to test any link between smoking and emphysema. (Photo by AP Photo)

A huge colony of Pacific Walrus on Arakamchechen Island in the Northern Bering Sea. (Photo by Francois Gohier/Ardea/Caters News)

“Daredevil photographer Krystle Wright suffered a catalogue of injuries after an accident on a shoot in Pakistan. The 26-year-old was left with internal bruising, tendon damage, two fractures, a torn ligament and 10 stitches above her eye following the horrific fall in the Himalayas. Wright took to the air on a dual paraglider and flew at a stomach-churning 18,000 feet to capture the incredible images. But as she neared the end of her trip Wright hit a bolder and blacked out following a bad take-off. The keen photographer, from Queensland, Australia, has travelled the world shooting some of the most awe-inspiring extreme sport stunts”. – Caters News. Photo: Screenshot of Krystle and Hernan, taken on a foot mounted GoPro. (Photo by Krystle Wright/Caters News)

Sri Lankan military personnel march during the country's 66th Independence Day celebrations in the central town of Kegalle, about 40 kms from the capital Colombo on February 4, 2014. Sri Lanka cemmemorates its independence from British rule on February 4, 1948. (Photo by Ishara S. Kodikara/AFP Photo)

Waldo, a 6-year-old Tibetan Terrier belonging to Susan and Mike Leverette of Sebastian, competes in the third heat of the medium dogs division at the Hang 20 Surf Dog Classic at Carlin Park in Jupiter Saturday, August 29, 2015. “The waves are a little bigger than we are used to”, said Susan. (Photo by Bruce R. Bennett/The Palm Beach Post)

A couple dance tango for tourists at Caminito, a touristic hotspot of La Boca neighborhood in Buenos Aires, Argentina, October 15, 2016. (Photo by Enrique Marcarian/Reuters)