Artists perform during a slum party in Oworonshoki district of Lagos, Nigeria, 24 September, 2024. The slum party is a yearly artistic dance festival initiated by Ennovate Dance House. It highlights the positive sides of the slum community and brings hope to the inhabitants. (Photo by Emmanuel Adegboye/EPA/EFE)

Red-crowned cranes, dancing gracefully in the snowy fields, spread their wings and perform a “courtship dance” at the feeding area of the ”Tsurui Ito Red-crowned Crane Sanctuary” in the village of Tsurui, in Japan's northern island of Hokkaido on February 15, 2025. (Photo by JIJI Press/AFP Photo)

Yoandri Hernandez Garrido, 37, proudly displays his 12 fingers in Baracoa, Guantanamo province, Cuba. His condition, known as polydactyly, is relatively common, but it's rare for extra digits to be so perfect.

Polydactyly or polydactylism (from Ancient Greek πολύς (polus) "many" + δάκτυλος (daktulos) "finger"), also known as hyperdactyly, is a congenital physical anomaly in humans, dogs, and cats having supernumerary fingers or toes. Polydactyly is the opposite of oligodactyly (fewer fingers or toes).

In this picture taken Friday, September 8, 2017, Brazilan Samba dancers perform on stage during the Harare International Carnival in the capital. An international carnival aimed at boosting the local tourism industry has ended in economically troubled Zimbabwe. Some viewed the Harare festivities, which ended Sunday and featured artists and dancers from Brazil, Cuba, Egypt and elsewhere, as a relief from the struggle to get by in the southern African country. (Photo by Tsvangirayi Mukwazhi/AP Photo)

Revelers dressed as Father Frost, the equivalent of Santa Claus, dance during a parade in Almaty December 28, 2014. (Photo by Shamil Zhumatov/Reuters)

Girls during a class at the Teire Irish dance school in Moscow, Russia on March 15, 2019. (Photo by Sergei Karpukhin/TASS)

Kaw-Claa, a Tlingit native woman in full potlatch dancing costume, 1906. (Photo by Case & Draper/Buyenlarge/Getty Images)

A reveller dances next to a police officer at Notting Hill Carnival in London, Britain on August 28, 2022. (Photo by Henry Nicholls/Reuters)