Armed Yemeni children sit in the back of a pick up truck with fighters loyal to Yemen's Saudi-backed President Abedrabbo Mansour Hadi in the Dar saad neighbourhood of the southern Yemeni city of Aden on May 10, 2015, as they continue to battle Shiite Huthi rebels. (Photo by Saleh Al-Obeidi/AFP Photo)

A Capybara bathes in the hot spring water at the Saitama Children's zoo in Higashi Matsuyama city, Saitama prefecture on December 21, 2014. Seven capybaras in the zoo, originally from South America, enjoyed the hot spring water on the chilly winter day in Japan. (Photo by Toshifumi Kitamura/AFP Photo)

A man sells traditional doll toys and sweets for children to celebrate the birthday of prophet Muhammad, also known as “mawlid al nabi”, which will fall next week, in a makeshift tent in Cairo, December 30, 2014. (Photo by Mohamed Abd El Ghany/Reuters)

A Santa hangs down the facade of the Hospital Germans Trias i Pujol, with the help of the Charity Firemen of Barcelona, as he visits children admitted to the medical center, in Barcelona, Spain, 19 December 2022. (Photo by Alejandro Garcia/EPA/EFE)

Balinese children take part in a traditional mud bath known as Mebuug-buugan, a day after Nyepi – the “Day of Silence”, aimed at neutralising bad traits in Kedonganan village on Indonesia's resort island of Bali on March 23, 2023. (Photo by Sonny Tumbelaka/AFP Photo)

Children listen to speakers as U.S. President Joe Biden and first lady Jill Biden host a barbeque with active-duty military families on the South Lawn at the White House in Washington, U.S., July 4, 2023. (Photo by Julia Nikhinson/Reuters)

Children walk amid a mirror installation titled “Sea of Mirrors”, featuring digital images of fish in the ocean during a preview tour the day before the show's public opening at the AquaRio aquarium in Rio de Janeiro, Brazil, Wednesday, June 14, 2023. (Photo by Silvia Izquierdo/AP Photo)

Protesters wear gas masks in the front of the Romanian Environment Ministry in Bucharest March 4, 2019, to demand better air. Dozens of people holding placards reading “Our children don't breath air anymore” gather in the front of the Environment Ministry to ask for better breathable air in Bucharest. (Photo by Daniel Mihailescu/AFP Photo)