Hartebeests graze in Nairobi national park against a backdrop of the city, Kenya on May 11, 2017. (Photo by Baz Ratner/Reuters)





A flock of sheep huddles together while snow spindrift is whipped up by strong winds in Swaledale, North Yorkshire, UK on March 17, 2017. (Photo by Paul Kingston/NNP North News & Pictures Ltd)





Wild donkeys in the Karpasia peninsula in northern Cyprus on August 23, 2017. (Photo by Yiannis Kourtoglou/Reuters)





An ostrich stands in a field of second corn (winter corn) after near Lucas do Rio Verde in the Mato Grosso state, Brazil, July 27, 2017. (Photo by Nacho Doce/Reuters)





A Guinea fowl is seen with the buildings with the logos of three of South Africa's biggest banks, ABSA, Standard Bank and First National Bank (FNB) in the background, in Cape Town, South Africa, August 30, 2017. (Photo by Mike Hutchings/Reuters)





A kangaroo jumps in a drought-effected paddock on Kahmoo Station property, located on the outskirts of the south-western Queensland town of Cunnamulla in outback Australia, August 10, 2017. (Photo by David Gray/Reuters)





An Indian one-horned rhinoceros wades through flood waters at the flooded Pobitora wildlife sanctuary in India's northeastern Assam state on August 17, 2017.
At least 221 people have died and more than 1.5 million have been displaced by monsoon flooding across India, Nepal and Bangladesh, officials said August 15, as rescuers scoured submerged villages for the missing. (Photo by Biju Boro/AFP Photo)





Bears gather at Mikfik Creek, Alaska in June 2016 to fish for sockeye salmon. While solitary most of their lives, brown bears have little choice but to coexist to feed when the fish are running. (Photo by Jessica Matthews/The Washington Post)





Arabian Oryx are seen at the Arabian Oryx Sanctuary in Um al-Zamool, near the United Arab Emirates' border with Saudi Arabia on March 23, 2017. The sanctuary stretches over an estimated area of 8,900 square kilometres and currently hosts nearly 155 of the species, which were reintroduced into the its natural habitat in the UAE in a five-year conservation plan launched by UAE's late ruler Sheikh Zayed bin Sultan Al Nahyan, after fears of their extinction. (Photo by Karim Sahib/AFP Photo)





In this Thursday, August 17, 2017 photo, a herd of llamas runs on a path alongside the Marcapomacocha Lagoon, Peru, in the heights of the Andes where the rain falls for 5 consecutive months. Residents in the city of Lima rely on a vast network of concrete tunnels to transport water originating in lakes within the Andes mountains to the bone-dry capital some 200 kilometers (125 miles) away. (Photo by Martin Mejia/AP Photo)