Young bonobo at Cologne Zoo | Photo: zoos.media 27. July 202121. July 2021 conservation, history, media-echo « back Cologne Zoo’s director Prof. Pagel celebrates 30 years of service Published on lifepr.de the 28.06.2021. Prof. Theo B. Pagel is not only celebrating his anniversary as director of Cologne Zoo but also 30 years of commitment to conservation. » to the press release Share this post