The Problem with that speices is-in most zoos, the indoor exhibts are defintely too small with a too hard ground ( rain forest animals do need a soft floor substarte!) so Berlin, Marwell ( I like their outdoor exhibit-its huge, but without a Pool-it seems, nobody at Marwell know how to keep Hippos) Plzen, Bristol to name just a few. We have a long Winter time in Europe, so PH have to spend six or seven month a year inside in this tiny indoor quarters.... Leipzig Zoo has good indoor exhibt , but no outdoor exhibit, so Thumbs down for that point. Zoos still have to learn so much about the welfare of both Hippo species.