This is equal parts disgusting and hypnotic. We’ve seen hippos using their tails to spray their poop around, but we’ve only seen it on land—and the hippo wasn’t pressed right up against glass. Let’s ...

Usually, dumping fish-killing garbage into rivers is a human’s job. But hippos seem to be doing it, too, through their routine mass pooping events. At least, that’s what a team of scientists in the ...

Hippos might seem harmless from a distance, but their poop plays a surprisingly dangerous role in river ecosystems. Here's how this natural waste can choke out fish, alter water quality, and even ...

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Hippopotamus excrement could be lethal for river fish, a new study says. In fact, it might be the reason why fish are dying in Kenya's Mara River. A common belief among ecologists is that agricultural ...