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Germany. North Rhine-Westphalia state. Cologne Zoological Garden. Being the third oldest zoo in Germany, it features over 10,000 animals of more than 850 species on more than 20 hectares. The Humboldt penguin (Spheniscus humboldti) is a medium-sized penguin. It is named after the explorer Alexander von Humboldt. A group of Humboldt penguins swim in cold water. 24.01.24 © 2024 Didier Ruef