A dog looks on, as dogs and humans take part in the annual Paris Sausage Walk, also known as the march of the dachshunds, in Paris, France, on November 17, 2024. (Photo by Kevin Coombs/Reuters)

Faces of a couple are smeared with colored powder as they celebrate Holi, the Hindu festival of colors, in Mumbai, India, Monday, March 25, 2024. (Photo by Rafiq Maqbool/AP Photo)

American singer-songwriter and rapper Janelle Monáe at Richie Akiva's 10th Annual “The After” Met Gala After Party held at Casa Cipriani on May 6, 2024 in New York, New York. (Photo by Daniel Zuchnik/WWD via Getty Images)

LADANIVA, representing Armenia, performs “Jako” during the Grand Final of the 2024 Eurovision Song Contest, in Malmo, Sweden, on May 11, 2024. (Photo by Leonhard Foeger/Reuters)

A festival-goer sings at Rock in Rio music festival while Brazilian rappers Veigh and Kayblack perform in Rio de Janeiro, Friday, September 13, 2024. (Photo by Hannah-Kathryn Valles/AP Photo)

Firefighters pull a pig as they try to rescue it from a well at a pig farm in Huanghua township of Leqing, Zhejiang province, April 25, 2014. Seven local firefighters successfully rescued a 300 kg (661 lbs) pig which fell down a well on Friday morning, local media reported. (Photo by Reuters/China Daily)

Winston Leonard Spencer Churchill (1874–1965), British Statesman and Prime Minister inspecting the boys from a training ship. (Photo by Hulton Archive/Getty Images). 1912

Behaviour: Mammals category. Giant Gathering by Tony Wu, USA. Dozens of sperm whales mingled noisily off Sri Lanka’s northeast coast, stacked as far down as Tony could see. This was a congregation of dozens of social units, like a gathering of the clans. Aggregations like this could be a critical part of the whales’ rich social lives but are rarely reported. Some two thirds of the population was wiped out before commercial whaling was banned in 1986. This kind of major gathering could be “a sign that populations are recovering”, says Tony. (Photo by Tony Wu/Wildlife Photographer of the Year 2017)