A horse rolls in mud in the Romani camp in Velykyi Bereznyi urban-type settlement, Zakarpattia Region, western Ukraine on February 28, 2021. (Photo by Ukrinform/Rex Features/Shutterstock)

A member of a winter swimming club wears flippers during the celebration of Maslenitsa, also known as Pancake Week, a pagan holiday, marking the end of the winter, in Novosibirsk, Russia. (Photo by Alexandr Kryazhev/Sputnik/Profimedia)

A man and his son ride a horse at Tahrir Square in Sanaa, Yemen on January 21, 2021. (Photo by Khaled Abdullah/Reuters)

Carnival participants dressed in costume and wearing body paint pose for a group picture during the annual Zambo carnival held in Lebanon's northern city of Tripoli on March 14, 2021, marking the last period of excess on the eve of the Christian Greek Orthodox lent. The inspiration of the annual Zambo celebration is unclear, despite it being a tradition that stretches back over a century to when an emigrant to Brazil returned to his native Tripoli bringing the carnival with him. (Photo by Ibrahim Chalhoub/AFP Photo)

An Orangutan named Elze walks in the Biopark of Rio during a media tour in Rio de Janeiro, Brazil, Thursday, March 18, 2021. The park was closed to the public for renovations to convert the city zoo into a center for biodiversity conservation and will reopen to the general public at the end of March. (Photo by Bruna Prado/AP Photo)

In this image released by World Press Photo, Thursday April 15, 2021, by Ami Vitale for CNN, titled Rescue of Giraffes from Flooding Island, which won the first prize in the Nature Singles category, shows A Rothschild's giraffe (Giraffa camelopardalis rothschildi) is transported to safety in a custom-built barge from a flooded Longicharo Island, Lake Baringo, in western Kenya, on Dec. 3, 2020. (Photo by Ami Vitale for CNN, World Press Photo via AP Photo)

U.S. President Donald Trump holds news conference on the coronavirus outbreak at the White House in Washington, U.S., February 26, 2020. (Photo by Carlos Barria/Reuters)

A cleaning staff waers protective gear to disinfect a metro carriage as a prevemtive measure against the spreading of the COVID-19 coronavirus in Addis Ababa, Ethiopia, on March 20, 2020. African countries have been among the last to be hit by the global COVID-19 coronavirus epidemic but as cases rise, many nations are now taking strict measures to block the deadly illness. (Photo by Michael Tewelde/AFP Photo)