Nihon University professor and head of Nihon University Animal Medical Center Kazuya Edamura, 49, points to cat photos on a computer screen, which are used to train the AI of “CatsMe!”, an AI-driven smartphone application jointly developed by tech startup Carelogy and researchers at Nihon University that purports to tell when a cat is feeling pain, as he gives a lecture to students on diagnosing pain in cats, at the medical center in Fujisawa, south of Tokyo, Japan on June 11, 2024. (Photo by Issei Kato/Reuters)

A squirrel digs into a pumpkin in Washington, U.S., November 28, 2022. (Photo by Amanda Andrade-Rhoades./Reuters)

A Siberian tiger gestures at the Siberian Tiger Park in Harbin, in China's northeastern Heilongjiang province, on January 6, 2023. (Photo by Hector Retamal/AFP Photo)

Models present a creations by Maggie Ma collection during the SS2026 China Fashion Week, in Beijing, China, Tuesday, September 9, 2025. (Photo by Andy Wong/AP Photo)

An elephant calf, Tula-Tu plays with a pumpkin, as the Oregon Zoo celebrates Halloween during the 27th annual Squishing of the Squash, in Portland, Oregon, U.S., October 16, 2025. (Photo by Oregon Zoo/Handout via Reuters)

Floodwaters cover a Buddhastatue of at Wat Taku Buddhist temple in Bang Ban district in the central Thai province of Ayutthaya on November 14, 2025. (Photo by Lillian Suwanrumpha/AFP Photo)

Snakes hang from a wooden cabinet marked with the Chinese characters “poisonous snake”, at a snake soup shop ahead of the Spring Festival in Hong Kong January 29, 2013. (Photo by Bobby Yip/Reuters)

A girl lights a candle as she marks the anniversary of 2015 Nepal earthquake, at Boudhanath stupa in Kathmandu, Nepal April 25, 2017. (Photo by Navesh Chitrakar/Reuters)