The fourth annual BigPicture Natural World Photography Competition aims to celebrate the diversity of life on Earth, and encourages people to protect and conserve it. Here: “The Salmon Catchers”. Terrestrial Wildlife. To capture this view of a mother grizzly bear and her cub, photographer Peter Mather set up a camera trap on a log that he knew the bears tended to traverse while fishing for salmon, in the Yukon River watershed in Canada. (Photo by Peter Mather/BigPicture Natural World Photography Competition 2017)

Thomas Thwaites, a 34-year-old researcher from London, has spent the past year creating prosthetics that allow him to roam around on all fours like goat.

A man sits on top of a car as he is stranded on a flooded street in Tianjin, China, July 20, 2016. (Photo by Reuters/Stringer)

A child looks at a polar bear swimming under a water in its enclosure on a hot summer day at Prague Zoo, Czech Republic, July 30, 2015. (Photo by David W. Cerny/Reuters)

A 13-month-old chimp named Fumo carries a “Christmas present” of food treats in wrapping paper under his arm during a Christmas-themed feeding time at Sydney's Taronga Park Zoo, December 9, 2014. Fumo, meaning “chief” or “spear” in Swahili, is one of the latest additions to the zoo's successful primate breeding program. (Photo by Jason Reed/Reuters)

Fareeda, wife of Shameem Ahmad Ganai, who according to Fareeda was arrested during a clampdown a day before the scrapping of the special constitutional status in Kashmir by the government, tends to her husband's sheep in their house, in Pulwama, south of Srinagar, August 13, 2019. (Photo by Danish Siddiqui/Reuters)

A man walks past specially designed wash basins in a public toilet at the Foreigners Street on April 26, 2007 in Chongqing Municipality, China. (Photo by China Photos/Getty Images)

If you think you are looking at stunning sunset safari photographs, think again. From a herd of elephants trailing the savanna at sunset to a crocodile hungrily engulfing a baby impala, amazingly these clever pictures are actually made using nothing but props, toy animals and vegetables. Julia Wimmerlin has always dreamed of going on safari and found a way to channel her dream in a seriously creative way. Here: An elephant with plants of parsley, rosemary, tamarind and coconut boulders. (Photo by Julia Wimmerlin/Caters News)