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    See butterflies spread their wings for spring in this week's best animal pictures

  • See butterflies spread their wings for spring in this week's best animal pictures

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    Spread your wings

    A butterfly comes out of its cocoon at an exhibition of tropical butterflies at the botanical garden in Prague on April 9.

    AFP - Getty Images
  • See butterflies spread their wings for spring in this week's best animal pictures

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    A girl looks on as butterfly sits on her hand during an exhibition of tropical butterflies at the botanical garden in Prague on April 9.

    AFP - Getty Images
  • See butterflies spread their wings for spring in this week's best animal pictures

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    Two butterflies sit on a twig at an exhibition of tropical butterflies at the botanical garden April 9, 2017 in Prague.

    AFP - Getty Images
  • See butterflies spread their wings for spring in this week's best animal pictures

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    A butterfly spreads its wings after coming out of its cocoon at an exhibition of tropical butterflies at the botanical garden April 9, 2017 in Prague.

    AFP - Getty Images
  • See butterflies spread their wings for spring in this week's best animal pictures

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    A Monarch butterfly caterpillar is pictured at a butterfly farm in the Chapultepec Zoo in Mexico City on April 7, 2017.

    AFP - Getty Images
  • See butterflies spread their wings for spring in this week's best animal pictures

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    A Monarch butterfly is pictured at a butterfly farm in the Chapultepec Zoo in Mexico City on April 7.

    AFP - Getty Images
  • See butterflies spread their wings for spring in this week's best animal pictures

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    Millions of monarch butterflies arrive to Mexico each year after travelling more than 4,500 kilometres from the United States and Canada.

    AFP - Getty Images
  • See butterflies spread their wings for spring in this week's best animal pictures

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    AFP - Getty Images