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Pictures | Tue May 6, 2014 | 3:40pm EDT

Lion cubs get dunked

<p>Smithsonian National Zoo biologist Leigh Pitsko releases a male lion cub for its swim test in the zoo habitat moat, in Washington May 6, 2014. Four unnamed, ten-week-old lion cubs were tested for their ability to swim and remove themselves from their moat. REUTERS/Gary Cameron</p>

Smithsonian National Zoo biologist Leigh Pitsko releases a male lion cub for its swim test in the zoo habitat moat, in Washington May 6, 2014. Four unnamed, ten-week-old lion cubs were tested for their ability to swim and remove themselves from their...more

Smithsonian National Zoo biologist Leigh Pitsko releases a male lion cub for its swim test in the zoo habitat moat, in Washington May 6, 2014. Four unnamed, ten-week-old lion cubs were tested for their ability to swim and remove themselves from their moat. REUTERS/Gary Cameron

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<p>Animal keeper J.T. Taylor carries out a female lion cub for its swim test May 6, 2014. REUTERS/Gary Cameron</p>

Animal keeper J.T. Taylor carries out a female lion cub for its swim test May 6, 2014. REUTERS/Gary Cameron

Animal keeper J.T. Taylor carries out a female lion cub for its swim test May 6, 2014. REUTERS/Gary Cameron

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<p>Animal keeper J.T. Taylor releases a female lion cub for its swim test May 6, 2014. REUTERS/Gary Cameron</p>

Animal keeper J.T. Taylor releases a female lion cub for its swim test May 6, 2014. REUTERS/Gary Cameron

Animal keeper J.T. Taylor releases a female lion cub for its swim test May 6, 2014. REUTERS/Gary Cameron

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<p>Animal keeper J.T. Taylor releases a female lion cub for its swim test May 6, 2014. REUTERS/Gary Cameron</p>

Animal keeper J.T. Taylor releases a female lion cub for its swim test May 6, 2014. REUTERS/Gary Cameron

Animal keeper J.T. Taylor releases a female lion cub for its swim test May 6, 2014. REUTERS/Gary Cameron

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<p>Biologist Leigh Pitsko carries out a male lion cub for its swim test May 6, 2014. REUTERS/Gary Cameron</p>

Biologist Leigh Pitsko carries out a male lion cub for its swim test May 6, 2014. REUTERS/Gary Cameron

Biologist Leigh Pitsko carries out a male lion cub for its swim test May 6, 2014. REUTERS/Gary Cameron

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<p>Biologist Leigh Pitsko releases a male lion cub for its swim test May 6, 2014. REUTERS/Gary Cameron</p>

Biologist Leigh Pitsko releases a male lion cub for its swim test May 6, 2014. REUTERS/Gary Cameron

Biologist Leigh Pitsko releases a male lion cub for its swim test May 6, 2014. REUTERS/Gary Cameron

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<p>Animal keeper Kristen Clark chases a male lion cub during its swim test May 6, 2014. REUTERS/Gary Cameron</p>

Animal keeper Kristen Clark chases a male lion cub during its swim test May 6, 2014. REUTERS/Gary Cameron

Animal keeper Kristen Clark chases a male lion cub during its swim test May 6, 2014. REUTERS/Gary Cameron

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<p>Animal keepers J.T. Taylor (R) and Kristen Clark (L) carefully handle a female lion cub after its swim test May 6, 2014. REUTERS/Gary Cameron</p>

Animal keepers J.T. Taylor (R) and Kristen Clark (L) carefully handle a female lion cub after its swim test May 6, 2014. REUTERS/Gary Cameron

Animal keepers J.T. Taylor (R) and Kristen Clark (L) carefully handle a female lion cub after its swim test May 6, 2014. REUTERS/Gary Cameron

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<p>Animal keeper Marie Magnuson (L) and zoo curator of cats Carig Saffoe (R) are sprayed by a female lion cub after its swim test May 6, 2014. REUTERS/Gary Cameron</p>

Animal keeper Marie Magnuson (L) and zoo curator of cats Carig Saffoe (R) are sprayed by a female lion cub after its swim test May 6, 2014. REUTERS/Gary Cameron

Animal keeper Marie Magnuson (L) and zoo curator of cats Carig Saffoe (R) are sprayed by a female lion cub after its swim test May 6, 2014. REUTERS/Gary Cameron

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