A fuzzy caterpillar on a basil plant in west Bengal, India on December 25, 2023. The caterpillar’s defence system is its hair, which has microscopic barbs that break off easily in the skin of would-be predators. (Photo by Soumyabrata Roy/NurPhoto/Rex Features/Shutterstock)

A rider goes through flames during the annual “Luminarias” celebration on the eve of Saint Anthony's day, Spain's patron saint of animals, in the village of San Bartolome de Pinares, northwest of Madrid, Spain on January 16, 2024. (Photo by Juan Medina/Reuters)

American actress Megan Fox attends CELSIUS Cosmic Desert Event at Coachella on April 12, 2024 in Indio, California. (Photo by Tommaso Boddi/Getty Images for CELSIUS Energy)

Mount Kilimanjaro looms behind an elephant at Amboseli National Park in southern Kenya, 2024. (Photo byYaron Schmid/YS Wildlife Photography/Solent News)

American singer-songwriter Olivia Rodrigo is red hot backstage at her show in Argentina in the last decade of March 2025. (Photo by oliviarodrigo/Instagram)

Stunning image capture the moment a tiny harvest mouse uses wheat stems as stilts as he munches on a kernel in UK in August 2025. The minute-mouse, who weighs as much as a 2p coin and is only two-inches-long, uses his prehensile tail to keep himself perfectly level. (Photo by Tony Nellis/South West News Service)

A model holds a dog presenting a creation by Anthony Rubio during New York Fashion Week, in New York City, U.S., September 13, 2025. (Photo by Caitlin Ochs/Reuters)

Among the fish populations that could be harmed by the Xayaburi dam in Laos is the critically endangered Mekong giant catfish, considered by the Guinness Book of World Records to be the world’s largest freshwater fish. The fish, which grows to 650 pounds and about 10 feet long, is only found in the Mekong River. It is migratory, moving between downstream habitats in Cambodia upstream to northern Thailand and Laos each year to spawn. Some experts fear the Xayaburi dam could block the migration and drive the giant catfish to extinction. (Photo by Courtesy of Zeb Hogan/University of Nevada, Reno)