Best animal pictures of the year 2021

A horse stands in a snow-covered field in Cowshill, County Durham, Britain. REUTERS/Lee Smith

Disabled dogs in mobility aids run during a daily walk at The Man That Rescues Dogs Foundation in Chonburi, Thailand. REUTERS/Athit Perawongmetha

A polar bear is pictured after sparring with another bear near the Hudson Bay community of Churchill, Manitoba, Canada. REUTERS/Carlos Osorio

A gibbon walks amid models of vehicles at a zoo in the park of miniatures in Bakhchisaray, Crimea. REUTERS/Alexey Pavlishak

A cat walks among incense sticks drying at a home-industry factory, ahead of the Chinese Lunar New Year, in Tangerang, on the outskirts of Jakarta, Indonesia. REUTERS/Willy Kurniawan

A farmer gives a pig a microphone "to sing" on the stage of The Pork Chop Revue comedy show at the 117th Kentucky State Fair in Louisville, Kentucky. REUTERS/Amira Karaoud

Zookeeper Charli Ellis measures the shell of Polly, a Galapagos tortoise, during the annual stocktake at ZSL London Zoo in London, Britain. REUTERS/John Sibley

Volodymyr, a service member of the Ukrainian armed forces, plays with puppies at fighting positions on the line of separation from pro-Russian rebels in Donetsk region, Ukraine. The two unnamed puppies living on frontline positions will be taken home and named by soldiers departing on troops rotation. REUTERS/Oleksandr Klymenko

Fireflies light up inside a forest at Pitrufquen area, Temuco, Chile. REUTERS/Cristobal Saavedra Escobar

People feed seagulls from a boat at Yamuna river, on a smoggy morning in New Delhi, India. REUTERS/Navesh Chitrakar

An eleven-day-old baby male Bornean orangutan is held by his mother Suli at Bioparc Fuengirola in Fuengirola, southern Spain. REUTERS/Jon Nazca

People watch a flock of sheep during the annual parade on the streets of Madrid, as shepherds demand to exercise their right to use traditional migration routes for their livestock from northern Spain to winter grazing pasture land in southern Spain. REUTERS/Javier Barbancho

A cow is transported by a helicopter after its summer sojourn in the high Swiss Alpine meadows near the Klausenpass, Switzerland. REUTERS/Arnd Wiegmann

Bengal tiger Garfield reacts at the zoo in Havana, Cuba. REUTERS/Alexandre Meneghini

Migrating Great White pelicans gather at a water reservoir in Mishmar Hasharon, central Israel. REUTERS/Amir Cohen