This image provided by Audubon Zoo shows Casey, a male western lowland silverback gorilla who came to Audubon Zoo in New Orleans in 2002. Two popular but endangered great apes are leaving the zoo in hopes that Casey and Berani the orangutan will father babies in their new homes. Zoo officials said in a news release Tuesday, June 6, 2017, that Berani had a daughter eight years ago, but Casey has been paired with four different females without any offspring. Both species are critically endangered. Animal care teams hope the change of scenery will spark successful breeding. (Audubon Zoo via AP)
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