Two horses appear to burst into laughter before a sweet embrace. The horses both turn their head to look at the camera and flash their teeth, treating the lucky photographer to a rare shot. Moments later the pair show their affectionate side by coming together and “hugging”. Photographer Nir Amos, 34, said he was “amazed” to capture the horses “laughing” in a field near Skógar, in the south east of Iceland on July 31, 2018. (Photo by Nir Amos/Solent News & Photo Agency)

A lone male cheetah is set upon by a pack of African wild dogs. Peter Haygarth had been following the dogs as they hunted in Zimanga Private Game Reserve in KwaZulu-Natal, South Africa. On first encountering the cheetah, the dogs were wary, but as the rest of the pack arrived, their confidence grew and they began to encircle the cat. Peter kept his focus on the cat’s face. In a few minutes the spat was over as the cheetah fled. (Behaviour: mammals category). (Photo by Peter Haygarth)

Amundsen-Scott South Pole Station experiences months of darkness. The sun dips below the horizon on March 21, after which follows several weeks of twilight before complete darkness results. Photo taken on June 25, 2009. (National Science Foundation/Jeremy Johnson)

Rajesh Babu, a police officer, wearing a helmet depicting coronavirus, requests a commuter to stay at home during a 21-day nationwide lockdown to limit the spreading of coronavirus disease (COVID-19), in Chennai, India, March 28, 2020. (Photo by P. Ravikumar/Reuters)

Rep. Jason Crow, D-Colo., comforts Rep. Susan Wild, D-Pa., while taking cover as protesters disrupt the joint session of Congress to certify the Electoral College vote on Wednesday, January 6, 2021. (Photo By Tom Williams/CQ-Roll Call, Inc via Getty Images)

Logan Kanan handfeeding Hammerhead sharks in a tank at Neal Watson's Bimini Scuba Center in the Bahamas in August 2023. (Photo by Ken Kiefer/Caters News Agency)

While many of us would pay good money for a spa mud bath, these fortunate hippos in South Luangwa National Park, Zambia, have nature to thank as they take a plunge in a lagoon in the second decade of February 2024. (Photo by Dimitar Nedelchev/Solent News)

A young chimpanzee reacts on a pirogue with Rohmay Ndoulek, from the Papaye International association, during an outing in the Douala-Edea Natural Park in Marienberg on December 15, 2024. In the heart of Douala-Edea Natural Park, dedicated Cameroonian caretakers tend to and rehabilitate chimpanzees, victims of poaching and deforestation, at Papaye International, a sanctuary dubbed a “monkey paradise”. Founded in 2001, the association funded by 30 million friends and the Brigitte Bardot Foundation regularly receives eco-volunteers from all over the world. (Photo by Daniel Beloumou Olomo/AFP Photo)