Somalis remove the body of a man killed in a blast in the capital Mogadishu, Somalia Saturday, October 14, 2017. A huge explosion from a truck bomb has killed at least 20 people in Somalia's capital, police said Saturday, as shaken residents called it the most powerful blast they'd heard in years. (Photo by Farah Abdi Warsameh/AP Photo)

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)

Visitors look up at mock-ups of dinosaur skeletons inside the Museum of Natural History in Pyongyang on September 28, 2016. (Photo by Ed Jones/AFP Photo)

A displaced Palestinian plays on a swing at the beach, amid the ongoing conflict between Israel and the Palestinian Islamist group Hamas, in Rafah in the southern Gaza Strip on January 31, 2024. (Photo by Mohammed Salem/Reuters)

A Salvadoran clown is seen wearing colorful clothes and face make-up during the parade within the framework of the National Salvadoran Clown Day that is celebrated on the first Wednesday of every December by legislative decree in San Salvador, El Salvador on December 07, 2022. After the pandemic crisis, dozens of Salvadoran clowns took to the streets to celebrate their day, and invite families to respect the work of bringing smiles to children and adults in El Salvador. (Photo by Alex Pena/Anadolu Agency via Getty Images)

Nicolo Martinenghi of Italy competes in the Men's 50m Breaststroke Final on day six of the 2022 FINA World Short Course Swimming Championships at Melbourne Sports and Aquatic Centre on December 18, 2022 in Melbourne, Australia. (Photo by Daniel Pockett/Getty Images)

This undated handout image courtesy of the San Diego Zoo Wildlife Alliance shows “Pat”, a Pacific pocket mouse fondly named after actor Sir Patrick Stewart. A mouse named after “Star Trek” actor Patrick Stewart is officially the world's oldest in captivity, a US zoo has announced Pat the Pacific Pocket Mouse – the smallest species of mouse in North America – bagged the title when he hit nine years and 209 days old on February 8, 2023. (Photo by Ken Bohn/San Diego Zoo Wildlife Alliance via AFP Photo)

A lizard wears a cowboy hat at Pet Expo Thailand on May 06, 2023 in Bangkok, Thailand. Dogs take part in a skateboarding competition at Pet Expo Thailand, a four day exhibition held at the Queen Sirikit National Convention Center. Dogs were judged on form and agility and separated into novice and experienced categories. Placing first place in the novice category was Mui and first in the experienced category was Suradej. Both house pets and exotic animals were featured at the expo, with visitors and their pets able to interact with them. (Photo by Lauren DeCicca/Getty Images)