Hi Chlidonias, Yeah, because Basel has the Hippo & Zebra combi, and AFAIK Zurich keeps only Pygmy Hippos ...
I'm certain it's Basel too, interestingly in 2004 "Kalungu, a 17-year-old male zebra, was knocked into the water and mauled after he bit the lip of hippo Wilhelm during the animals' daily ritual to establish territory, said zoo spokesperson Tanja Dietrich. The zebra managed to get out of the water but collapsed and died shortly after."
Is this behaviour you would see in the wild? I have seen footage of fish and birds cleaning hippo teeth but not a zebra. I can't really understand the motivation for the zebra to do this - from the hippos point of view in the absence of fish/birds/other then I guess a zebra is as good as anything else for a toothbrush. But surely the zebra is not starving and is aware that hippos are pretty bad tempered - why risk putting your head in its mouth? This isn't even the sort of thing that zebras do to each other is it? So it can't be confused thinking that the hippo is actually a big, fat, dirty zebra with big teeth that likes to swim alot... And I don't expect hippos do it to each other as they aren't really equipped orally so the zebra can't think its a hippo...
