The three orangutans at Pairi Daiza zoo, Belgium, developed a “special bond” with the otters after their river was run through the ape enclosure on March 2020. The zoo said it enriched both species’ environments. An animal – and this is even more the case of orangutans, with whom humans share 97 per cent of their DNA – must be entertained, occupied, challenged and kept busy mentally, emotionally and physically at all times. (Photo by Pascale Jones/The Sun)

Russian cadet preparing before the International Kremlin Cadet Ball in Moscow, Russia 12 December 2017. More than 1500 students from all Russian cadets school attend in Cadet Ball. (Photo by Yuri Kochetkov/EPA/EFE)

Portugal's Diana Gomes in action during the UEFA Women's Euro England 2022 group C match between Netherlands and Portugal at Leigh Sports Village on July 13, 2022 in Leigh, United Kingdom. (Photo by Carl Recine/Reuters)

Hundreds of volunteers stand at Goma International Airport receiving instructions before boarding a plane that will take them to a training center after responding to Democratic Republic of Congo's President Felix Tshisekedi's call to join the army to go to the front lines to fight against the M23 rebellion (March 23 Movement) in Goma, Democratic Republic of Congo, on November 14, 2022. (Photo by Guerchom Ndebo/AFP Photo)

A girl peers from between light decorations at a Christmas fair which opened ahead of the holiday season in Bucharest, Romania, Friday, November 25, 2022. Municipal authorities in the Romanian capital, quoted by local media, stated that holiday season city light decoration levels will remain at last year's level and use energy saving solutions. (Photo by Vadim Ghirda/AP Photo)

Argentina's Clara Baiocchi pats Puerto Rico's Alondra Negron as she falls during the women's 3000-meters steeplechase final at the Pan American Games in Santiago, Chile, Saturday, November 4, 2023. (Photo by Fernando Vergara/AP Photo)

A masked reveller parades through the streets on the first day of the carnival season in Lucerne, Switzerland, 12 February 2015. In the background the well known Kappellbruecke bridge. (Photo by Alexandra Wey/EPA)

Ministry of Defence handout photo of Chinooks from RAF Odiham as they take part in the Royal Air Force flypast over central London to mark the centenary of the RAF on Tuesday, July 10, 2018. (Photo by SAC Pippa Fowles (RAF)/PA Wire)