Frank the Cheetah who appears to be laughing in Moscow Zoo in Moscow, Russia. This cheetah must have been told something very very funny as he seems to laugh just like a hysterical hyena. Called Frank, the eight year old resident of Moscow's zoo found himself the subject of the split second reactions of photographer Sergei Gladyshev last month. Lasting only a moment, Sergei rushed to his camera out to capture the unusual facial expression that the cheetah pulled during a tour of the animal park. Reacting as quickly as he could to the amused cat, Sergei, 48, was stunned as this was the first time he had ever seen a cheetah pull such a face. (Photo by Sergei Gladyshev / Barcroft USA / Getty Images)
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