Author(s): the interview was conducted by Leandro Bergmann,
Contributing Editor, RHJ, Germany (RHJ); the questions were answered
by Thomas Ziegler, Cologne Zoo, Germany (TZ)
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Author(s): the interview was conducted by Leandro Bergmann,
Contributing Editor, RHJ, Germany (RHJ); the questions were answered
by Thomas Ziegler, Cologne Zoo, Germany (TZ)