One-year-old female African elephant Kibali throws sand with her trunk over herself in its enclosure at Schoenbrunner Tiergarten zoo amid the coronavirus disease (COVID-19) outbreak in Vienna, Austria, July 14, 2020. REUTERS/Lisi Niesner

African elephant Numbi throws sand with her trunk over herself in its enclosure at Schoenbrunner Tiergarten zoo amid the coronavirus disease (COVID-19) outbreak in Vienna, Austria, July 14, 2020. REUTERS/Lisi Niesner

African elephant Numbi throws sand with her trunk over herself in its enclosure at Schoenbrunner Tiergarten zoo amid the coronavirus disease (COVID-19) outbreak in Vienna, Austria, July 14, 2020. REUTERS/Lisi Niesner

One-year-old female African elephant Kibali throws sand with her trunk over herself in its enclosure at Schoenbrunner Tiergarten zoo amid the coronavirus disease (COVID-19) outbreak in Vienna, Austria, July 14, 2020. REUTERS/Lisi Niesner

Elephant Rock, a rock formation, stands off the coast on the Quinault Indian Reservation in Taholah, Washington, U.S., March 2, 2020. Several years ago ''the trunk'' of Elephant Rock succumbed to coastal erosion. The damage to the iconic Quinault landmark has made tribal members more aware of the impacts of climate change. REUTERS/Stephanie Keith SEARCH ''QUINAULT CLIMATE CHANGE'' FOR THIS STORY. SEARCH ''WIDER IMAGE'' FOR ALL STORIES.

Asian elephant Mara, 54, sticks her trunk through the bars as she waits for apples in her enclosure at the former city zoo now known as Ecopark in Buenos Aires, Argentina February 18, 2020. Picture taken February 18, 2020. REUTERS/Agustin Marcarian

A group of elephants are seen near a watering hole inside Hwange National Park, in Zimbabwe, October 23, 2019. REUTERS/Philimon Bulawayo

A group of elephants and giraffes walk near a carcass of an elephant at a watering hole inside Hwange National Park, in Zimbabwe, October 23, 2019. REUTERS/Philimon Bulawayo

A group of elephants and giraffes walk near a watering hole inside Hwange National Park, in Zimbabwe, October 23, 2019. REUTERS/Philimon Bulawayo

A group of elephants are seen at a watering hole inside Hwange National Park, in Zimbabwe, October 23, 2019. REUTERS/Philimon Bulawayo

A group of elephants walk near a solar panel at a watering hole inside Hwange National Park, in Zimbabwe, October 23, 2019. REUTERS/Philimon Bulawayo

An elephant walks through the Maasai Mara National Reserve, Kenya, October 15, 2019. REUTERS/Baz Ratner TPX IMAGES OF THE DAY

Elephants walk through the Maasai Mara National Reserve, Kenya, October 14, 2019. Picture taken October 14, 2019. REUTERS/Baz Ratner

Elephants walk through the Maasai Mara National Reserve, Kenya, October 14, 2019. Picture taken October 14, 2019. REUTERS/Baz Ratner

An orphaned baby elephant is seen after being bottle-fed, at the David Sheldrick Elephant Orphanage near Nairobi, Kenya October 2, 2018. REUTERS/Baz Ratner TPX IMAGES OF THE DAY

Baby elephants play next to their herd of elephants at Kaudulla national park in Habarana, Sri Lanka July 30, 2018. REUTERS/Dinuka Liyanawatte

A herd of elephants bathe in a lake at Kaudulla national park in Habarana, Sri Lanka July 30, 2018. REUTERS/Dinuka Liyanawatte

A herd of wild elephants is seen at Kaudulla national park in Habarana, Sri Lanka July 30, 2018. REUTERS/Dinuka Liyanawatte

A wild elephant bathes in a lake at Kaudulla national park in Habarana, Sri Lanka July 30, 2018. REUTERS/Dinuka Liyanawatte

A wild elephant bathes in a lake at Kaudulla national park in Habarana, Sri Lanka July 30, 2018. REUTERS/Dinuka Liyanawatte

A herd of wild elephants is seen at Kaudulla national park in Habarana, Sri Lanka July 30, 2018. REUTERS/Dinuka Liyanawatte

A baby elephant is seen next to a herd of elephants at Kaudulla national park in Habarana, Sri Lanka July 30, 2018. REUTERS/Dinuka Liyanawatte

A baby elephant is seen next to an elephant at Kaudulla national park in Habarana, Sri Lanka July 30, 2018. REUTERS/Dinuka Liyanawatte

Baby elephants play next to their herd of elephants at Kaudulla national park in Habarana, Sri Lanka July 30, 2018. REUTERS/Dinuka Liyanawatte

A baby elephant is seen next to a herd of elephants at Kaudulla national park in Habarana, Sri Lanka July 30, 2018. REUTERS/Dinuka Liyanawatte

A baby elephant is seen next to a herd of elephants at Kaudulla national park in Habarana, Sri Lanka July 30, 2018. REUTERS/Dinuka Liyanawatte

Baby elephants play next to their herd of elephants at Kaudulla national park in Habarana, Sri Lanka July 30, 2018. REUTERS/Dinuka Liyanawatte

Elephants and people play with water during the celebration of Songkran Water Festival, to commemorate Thailand's New Year in Ayutthaya, Thailand April 11, 2018. REUTERS/Jorge Silva

People feed elephants before a match at the annual King's Cup Elephant Polo Tournament at a riverside resort in Bangkok, Thailand March 8, 2018. REUTERS/Soe Zeya Tun

Elephants are seen during a match at the annual King's Cup Elephant Polo Tournament at a riverside resort in Bangkok, Thailand March 8, 2018. REUTERS/Soe Zeya Tun

Performers are seen before a match at the annual King's Cup Elephant Polo Tournament at a riverside resort in Bangkok, Thailand March 8, 2018. REUTERS/Soe Zeya Tun

A mahout bathes his elephant in the polluted water of river Yamuna in New Delhi, India February 6, 2018. REUTERS/Adnan Abidi TPX IMAGES OF THE DAY

Elephants graze at the Mpala Research Centre in Laikipia County Kenya, January 7, 2018. REUTERS/Baz Ratner

An elephant walks through the bush at the Mpala Research Centre in Laikipia County Kenya, January 7, 2018. REUTERS/Baz Ratner

An elephant and its calf walk through the bush at the Mpala Research Centre in Laikipia County Kenya, January 7, 2018. REUTERS/Baz Ratner

An elephant and its calf walk through the bush at the Mpala Research Centre in Laikipia County, Kenya, January 7, 2018. REUTERS/Baz Ratner

A twenty-one months old baby elephant sits inside the elephant breeding center in Chitwan, Nepal December 24, 2017. REUTERS/Navesh Chitrakar TPX IMAGES OF THE DAY

Sandra, a 42-year-old elephant, paints with her trunk in a Hungarian travelling circus of Florian Richter Circus in Budapest, Hungary November 2, 2017. Picture taken November 2, 2017. REUTERS/Laszlo Balogh TPX IMAGES OF THE DAY

Sandra, a 42-year-old elephant who took up painting with her trunk a few months ago, walks alongside her owner, Florian Richter, in Budapest, Hungary November 1, 2017. Picture taken November 1, 2017. REUTERS/Laszlo Balogh

Sandra, a 42-year-old elephant, paints with her trunk in a Hungarian travelling circus of Florian Richter Circus in Budapest, Hungary November 2, 2017. Picture taken November 2, 2017. REUTERS/Laszlo Balogh

Sandra, a 42-year-old elephant, paints with her trunk in a Hungarian travelling circus of Florian Richter Circus in Budapest, Hungary November 2, 2017. Picture taken November 2, 2017. REUTERS/Laszlo Balogh

An orphaned baby elephant uses its trunk to collect feed, at the David Sheldrick Elephant Orphanage within the Nairobi National Park, near Kenya's capital Nairobi, Kenya, September 18, 2017. REUTERS/Baz Ratner TPX IMAGES OF THE DAY

A two-month-old unnamed male baby elephant eats on the trunk of a tree at the Africam Safari Zoo in Puebla, Mexico, July 19, 2017. REUTERS/Edgard Garrido

A referee asks for the ball during a match at the annual King's Cup Elephant Polo Tournament at a riverside resort in Bangkok, Thailand March 9, 2017. REUTERS/Jorge Silva TPX IMAGES OF THE DAY

A male elephant attempts to stand on its feet after it was fitted with an advanced satellite radio tracking collar to monitor their movement and control human-wildlife conflict near Mt. Kilimanjaro at the Amboseli National Park, in Kenya November 2, 2016. REUTERS/Thomas Mukoya

A male elephant attempts to stand on its feet after it was fitted with an advanced satellite radio tracking collar to monitor their movement and control human-wildlife conflict near Mt. Kilimanjaro at the Amboseli National Park, in Kenya November 2, 2016. REUTERS/Thomas Mukoya TPX IMAGES OF THE DAY

A Kenya Wildlife Service (KWS) scientist holds an elephant as it is fitted with an advanced satellite radio tracking collar to monitor their movement and control human-wildlife conflict near Mt. Kilimanjaro at the Amboseli National Park, in Kenya November 2, 2016. REUTERS/Thomas Mukoya

An elephant's trunk is seen as it bathes in a pond ahead of the annual Perahera (street parade) at Rajamha viharaya Buddhist temple in Colombo, Sri Lanka September 9, 2016. REUTERS/Dinuka Liyanawatte

A mahout stands next to an elephant as he waits for customers at Tad Sae Waterfall outside Luang Prabang, Laos July 31, 2016. REUTERS/Jorge Silva SEARCH "LUANG" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY

Motola, the elephant that was injured by a landmine, wears her prosthetic leg at the Friends of the Asian Elephant Foundation in Lampang, Thailand, June 29, 2016. REUTERS/Athit Perawongmetha SEARCH "MOSHA" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES TPX IMAGES OF THE DAY

An elephant holds up a trainer during a performance for tourists at the Sriracha Tiger Zoo in the Chonburi province, Thailand June 7, 2016. REUTERS/Chaiwat Subprasom

Elephant crew member Adria Cuellar pets a performing elephant before its final show for the Ringling Bros and Barnum & Bailey Circus in Wilkes-Barre, Pennsylvania, U.S., May 1, 2016. REUTERS/Andrew Kelly TPX IMAGES OF THE DAY

Elephant crew member Adria Cuellar pets a performing elephant before its final show for the Ringling Bros and Barnum & Bailey Circus in Wilkes-Barre, Pennsylvania, U.S., May 1, 2016. REUTERS/Andrew Kelly

A Taronga Zoo staffer watches as a female Asian Elephant sprays water from her trunk after being painted to celebrate the Songkran festival, Thailand's New Year in Sydney, April 13, 2016. REUTERS/Jason Reed

A Taronga Zoo staffer watches as a female Asian Elephant sprays water from her trunk after being painted to celebrate the Songkran festival, Thailand's New Year in Sydney, April 13, 2016. REUTERS/Jason Reed

Elephants and mahouts wait before the opening ceremony of the annual charity King's Cup Elephant Polo Tournament at a riverside resort in Bangkok, Thailand March 10, 2016. REUTERS/Jorge Silva

An elephant takes part in an exhibition match during the annual charity King's Cup Elephant Polo Tournament at a riverside resort in Bangkok, Thailand March 10, 2016. REUTERS/Jorge Silva

Elephants have a fruit buffet during the opening ceremony of the annual charity King's Cup Elephant Polo Tournament at a riverside resort in Bangkok, Thailand March 10, 2016. REUTERS/Jorge Silva

Elephants and a mahout wait before the opening ceremony of the annual charity King's Cup Elephant Polo Tournament at a riverside resort in Bangkok, Thailand March 10, 2016. REUTERS/Jorge Silva

Elephants take part in an exhibition match during the annual charity King's Cup Elephant Polo Tournament at a riverside resort in Bangkok, Thailand March 10, 2016. REUTERS/Jorge Silva