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 ...

A family of hippos plays at the banks of Ewaso Ng'iro. Hippopotamus faeces from Mara River has been identified as vital for the survival of major lakes in East Africa due to their unique feeding ...

A hippopotamus deemed it essential to let a group of zoo visitors know who’s boss, marking the territory around its enclosure at Milwaukee County Zoo on Sunday, April 19. Erin Romaneck told Storyful ...

Few animals look as calm and harmless as a hippo lounging in the water, but appearances can be deceiving. Dangerously so, in the case of the hippo. Despite their bulky bodies and seemingly lazy nature ...

Hippos may appear inactive, but a recent study shows that they’re listening closely to their surroundings. Paul Souders via Getty Images Hippopotamuses are best known for their bumbling bodies, ...

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Possibly there are more important things to discuss, but let’s pause a moment to talk about poop. The animals at the San Antonio Zoo generate enough dung to fill about two 20-cubic-yard dumpsters a ...

Freelance writer Amanda C. Kooser covers gadgets and tech news with a twist for CNET. When not wallowing in weird gear and iPad apps for cats, she can be found tinkering with her 1956 DeSoto. When you ...