Dog Xiaoniu dressed in clothes walks across a street with its owner (not pictured) in Shanghai, December 19, 2014. According to local media, Xiaoniu accompanies its owner to the food market everyday and is able to walk with its hind legs for up to about an hour. (Photo by Reuters/Stringer)

Su Daocheng rides his home-made mechanical horse vehicle on a street in Shiyan, Hubei province January 18, 2015. Su spent 2 months making this 1.5 metre high and 2 metre long horse, which weighed 250 kilograms with 4 legs and 2 supportive wheels, local media reported. (Photo by Reuters/Stringer)

A brushtail possum whose ears and legs have been burnt from recent bushfires sits in a cage before being transported to a wildlife hospital, in Batemans Bay, South of Sydney, Australia, 14 January 2020. (Photo by Steven Saphore/EPA/EFE)

Union Berlin players celebrate after the Bundesliga playoff second leg match between 1. FC Union Berlin and VfB Stuttgart at Stadion an der alten Foersterei on May 27, 2019 in Berlin, Germany. (Photo by Annegret Hilse/Reuters)

Millonarios' midfielder David Silva controls the ball during the Copa Sudamericana group stage second leg football match between Colombia's Millonarios and Uruguay's PeÒarol at the Nemesio Camacho “El CampÌn” stadium in Bogota, on May 23, 2023. (Photo by Juan Barreto/AFP Photo)

Barcelona's Caroline Graham Hansen, center, in action during the women's Champions League quarterfinals, second leg, soccer match between FC Barcelona and SK Brann Kvinner at the Estadi Johan Cruyff in Barcelona, Spain, Thursday, March 28, 2024. (Photo by Joan Monfort/AP Photo)

Manchester City's Belgian midfielder #11 Jeremy Doku eyes the ball during the UEFA Champions League quarter-final second-leg football match between Manchester City and Real Madrid, at the Etihad Stadium, in Manchester, north-west England, on April 17, 2024. (Photo by Paul Ellis/AFP Photo)

Two robotic legged squad support system (LS3) machines by the Defense Advanced Research Project Agency follow a technician during a demonstration at Joint Base Myer-Henderson Hall, Virginia, on September 10, 2012. (U.S. Marine Corps photo by Sgt. Mallory S. VanderSchans via The Atlantic)