A chimpanzee is pictured at the zoo in Krasnoyarsk, Russia.

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An employee feeds black crested mangabey with pancakes to celebrate Maslenitsa (a pancake week) at the zoo in Krasnoyarsk, Russia.

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A polar bear is pictured at the zoo in Krasnoyarsk, Russia.

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Polar bears are pictured at the zoo in Krasnoyarsk, Russia.

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Polar beers are pictured at the zoo in Krasnoyarsk, Russia.

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A chimpanzee eats an apple at the zoo in Krasnoyarsk, Russia.

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A polar bear is pictured at the zoo in Krasnoyarsk, Russia.

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A chimpanzee eats vitaminized syrup for the prevention of ARVI at the zoo in Krasnoyarsk, Russia.

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A chimpanzee eats a pancake to celebrate Maslenitsa (a pancake week) at the zoo in Krasnoyarsk, Russia.

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A chimpanzee eats vitaminized syrup for the prevention of ARVI at the zoo in Krasnoyarsk, Russia.

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Mantled guereza with a baby is pictured at the zoo in Krasnoyarsk, Russia.

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A lar gibbon is pictured at the zoo in Krasnoyarsk, Russia.

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A lemur eats vitaminized syrup for the prevention of ARVI at the zoo in Krasnoyarsk, Russia.

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Southern pig-tailed macaque eats vitaminized syrup for the prevention of ARVI at the zoo in Krasnoyarsk, Russia.

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Black crested mangabey eats vitaminized syrup for the prevention of ARVI at the zoo in Krasnoyarsk, Russia.

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