Opossums on their mothers back at a game reserve in Central Minnesota, USA, on September 2, 2013. (Photo by Caters News Agency)

Kira Walkenhorst of Germany (L) signals as Doaa Elghobashy of Egypt (R) watches during the women's Beach Volleyball preliminary pool D game between Ludwig/Walkenhors of Germany and Elghobashy/Nada of Egypt the Rio 2016 Olympic Games at the Beach Volleyball Arena on Copacabana Beach in Rio de Janeiro, Brazil, 07 August 2016. (Photo by Antonio Lacerda/ANSA)

Humanoid robots fight during a kickboxing match on day two of the 2025 World Humanoid Robot Games at National Speed Skating Oval on August 16, 2025 in Beijing, China. The 2025 World Humanoid Robot Games (WHRG) will be held from August 14 to 17 in Beijing's National Speed Skating Oval, bringing together 280 teams from 16 countries across five continents. (Photo by Lintao Zhang/Getty Images)

“The Challenge!” Young boy relishes in a game of tug of war before school. Photo location: Lake Titicaca, Peru. (Photo and caption by Paul Heyman/National Geographic Photo Contest)

Children exercise before a wrestling practice session at an old Basque ball game gymnasium in downtown Havana, October 30, 2014. (Photo by Alexandre Meneghini/Reuters)

Baltimore Orioles center fielder Austin Hays leaps while taking the field prior to the first inning of a baseball game against the Cleveland Guardians, Tuesday, May 30, 2023, in Baltimore. (Photo by Julio Cortez/AP Photo)

Marcus Semien #2 of the Texas Rangers is doused with sports drink after the game against the Seattle Mariners at Globe Life Field on June 03, 2023 in Arlington, Texas. (Photo by Sam Hodde/Getty Images)

Karolina Kluskova of the Czech Republic formed one part of an artistic swimming duet at the European Games at Aquatics Centre in Oswiecim, Poland on June 22, 2023. (Photo by Sarah Meyssonnier/Reuters)