“Sniff out the Appenzell Cheese”. Alexander Hunter, 30, of Greenwich, Conn., took this photo in Appenzell, Switzerland, in September 2014. (Photo by Alexander Hunter)

A pine marten – one of a few wild mammals doing well in Britain (although they number just 3,700). A fifth of the country’s wild mammals are at high risk of extinction, research shows. (Photo by Maurice Flynn/The Mammal Society)

Common squirrel monkeys observe their Christmas present, a box full of mealworms, at the South America enclosure of the Budapest Zoo, in Budapest, Hungary, 24 December 2017. (Photo by Photo by Attila Kovacs/EPA/EFE/Rex Features/Shutterstock)

Nutrias venture near the camera at the river Nidda in Frankfurt am Main, Germany, 15 June 2017. The rabbit sized animals are often confused with biebers by amateurs. (Photo by Boris Roessler/DPA)

A South China Tiger cub meets public at Guangzhou Zoo on June 22, 2017 in Guangzhou, Guangdong Province of China. Guangzhou Zoo boasts of the successful breeding of South China Tiger cub after 15 years. (Photo by VCG/VCG via Getty Images)

Tony the Tiger poses for a photo prior to the Tony the Tiger Sun Bowl Game on Tuesday, December 31, 2024 in El Paso, TX. (Photo by Jorge Salgado/AP Content Services for Kellogg's Frosted Flakes)

Swimmers in fancy costume take part in the New Year's Day swim at Saundersfoot in Wales, Britain, January 1, 2017. (Photo by Rebecca Naden/Reuters)

A pheasant is seen among grasses in Bursa, Turkiye on October 07, 2024. Pheasants mostly live in forested areas, thickets and wetlands. Unlike females, male pheasants have a much more remarkable structure with their long tails and feathers in bright and variable colors. Also, they feed on fruits, grains, seeds and invertebrates. (Photo by Alper Tuydes/Anadolu via Getty Images)