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)

A confiscated pet lion poses with a dog as it arrived back home from the Phnom Tamao Wildlife Rescue Center after Prime Minister Hun Sen ordered authorities to return the animal in Phnom Penh, Cambodia, July 5, 2021. (Photo by Cindy Liu/Reuters)

Prince Philip, Duke of Edinburgh practicing his bicycle polo technique, Windsor Great Park, Berkshire, 1964. (Photo by Norman Potter/Daily Express/Hulton Archive/Getty Images)

A giant panda named Kai Kai looks on as he opens a gift to celebrate his upcoming 14th birthday at the River Safari wildlife park in Singapore on September 10, 2021. (Photo by Roslan Rahman/AFP Photo)

Sandra, a 29-year-old orangutan at Buenos Aires' zoo, on May 20, 2015. Sandra got cleared to leave a Buenos Aires zoo that was her home for 20 years, after a court ruled she was entitled to more desirable living conditions. (Photo by Juan Mabromata/AFP Photo)

A great crested grebe feeds a chick sitting on its mother’s back on a lake in Cáceres, Spain. (Photo by Jose Luis Ruiz/Solent News & Photo Agency)

Police officers look on as protesters block the road with burning tyres and wood, during a mass protest the morning after preliminary results were released for five communes in Conakry on October 21, 2020. African monitors said on October 20, 2020, that Guinea's weekend election was conducted properly, but the political opposition to incumbent Alpha Conde, which has already claimed victory, dismissed it as fraudulent. (Photo by John Wessels/AFP Photo)

A woman dressed in traditional Oromo costume attends a swearing ceremony of the newly named 72nd Borana Pastoralist chief, “Aba Gada” Guyo Wariyo in Arero, Ethiopia on March 9, 2025. (Photo by Tiksa Negeri/Reuters)