Giant Olympic rings are towed on The River Thames past The Tower of London on February 28, 2012 in London, England. (Photo by Peter Macdiarmid/Getty Images)
Servicemen of the Belarussian Interior Ministry's special forces unit perform during Maslenitsa celebrations, a pagan holiday marking the end of winter celebrated with pancake eating and shows of strength, at their base in Minsk, Belarus February 19, 2017. (Photo by Vasily Fedosenko/Reuters)
Artists watch burning an effigy of Lady Maslenitsa as they celebrate Maslenitsa, or Pancake Week, in Baikonur, Kazakhstan, March 13, 2016. Maslenitsa is widely viewed as a pagan holiday marking the end of winter and is celebrated with pancake eating and shows of strength, while the Orthodox Church considers it as the week of feasting before Lent. (Photo by Shamil Zhumatov/Reuters)
Aeroflot employees with a puppy at the canine service of Aeroflot at Sheremetyevo International Airport in Moscow Region, Russia on October 2, 2020, that has started to train service dogs to detect COVID-19 in people. (Photo by Vladimir Gerdo/TASS)
Hamish the polar bear tries out his new enclosure at the Yorkshire Wildlife Park at Branton, Doncaster on November 6, 2020, after moving from the Highland Wildlife Park in Scotland. Hamish was the first polar bear to be born in the UK. (Photo by Danny Lawson/PA Wire Press Association)
A boy doing chin-ups as he takes entrance exams at the Moscow Suvorov Military School in Moscow, Russia on July 11, 2019. (Photo by Sergei Karpukhin/Russian News Agency TASS via Getty Images)