4 of 20: In this April 20, 2010 photo, "Marques", a baby Lemur, hangs on to it's mother "Mococo" at the Roos-n-More Zoo located in Moapa, Nev. A baby ring-tailed lemur has been born to a licensed breeding pair of the endangered species at a southern Nevada zoo, a veterinarian owner of the facility said. ( (AP Photo/Las Vegas Review-Journal, Craig Moran))

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