This huge male orangutan is having a right old laugh as he squints his eyes and shows his huge teeth. The orangutan, called Bimbo, was relaxing on a platform around 5m high in his enclosure when he broke out into a laugh. But his happy smile soon disappeared when another orangutan came over to see what was going on. Bimbo – the only male in the group of five apes at Leipzig Zoo, in Germany - appears to be laughing in much the same way as a human would. (Photo by Martina Radtke/Solent News)

Actress Riley Keough reacts to the cameras at the Baby2Baby 10-Year Gala in Los Angeles, California on November 13, 2021. (Photo by Action Press/Rex Features/Shutterstock)

A pack of wild smooth-coated otters, nicknamed the “Zouk family”, crosses Penang Road in Singapore on March 3, 2021, the World Wildlife Day. The “Zouks”, a well-known otter family in Singapore, started out from the Istana on Wednesday, and made a “royal” tour of various landmarks in Singapore. (Photo by Chine Nouvelle/SIPA Press/Rex Features/Shutterstock)

A boy plays with a dragon-shaped puppet as he walks with his parent at Sydney CBD ahead of the Lunar New Year on February 09, 2024 in Sydney, Australia. Lunar New Year, also known as Chinese New Year, is celebrated around the world, and the Year of the Wood Dragon in 2024 is associated with growth, progress, and abundance, as wood represents vitality and creativity, while the dragon symbolizes success, intelligence, and honor. (Photo by Roni Bintang/Getty Images)

A wild elephant eats garbage containing plastic waste at a dump in Sri Lanka's eastern district of Ampara on June 3, 2023. Sri Lanka is set to launch a nation-wide clean up of plastic waste ahead of new laws banning the sale of single use plastics, the Environmental ministry said, after a spate of deaths of elephants and deer in the island's northeast after foraging at open garbage tips filled with plastic waste, whilst shrinking habitat has led to jumbos raiding villages looking for food. (Photo by Ishara S. Kodikara/AFP Photo)

Karen Dunn and the nuns from Nun of That Convent at Trailer Park during the final day of Electric Picnic 2023 in Co Laois, Ireland on September 3, 2023. (Photo by Alan Betson/The Irish Times)

Students take part in a parade during celebrations commemorating Nicaragua's 201th anniversary at the revolution square in Managua, on September 14, 2022. (Photo by Oswaldo Rivas/AFP Photo)

British singer-songwriter Raye (L) during The BRIT Awards 2021 at The O2 Arena on May 11, 2021 in London, England. (Photo by JMEnternational/JMEnternational for Brit Awards/Getty Images)