I did a German Zookeeper Apprenticship from 1998-2001 in ZOOM-Erlebniswelt GmbH, Gelsenkirchen and worked in total 8 years in that zoo. I only stoped working there because my family moved to Cumbria. If you like to know more about the Zoo, please visit there website: http://www.zoom-erlebniswelt.de (English website is provided).
