Hippos may look lazy in the water, but their poop creates one of the deadliest natural threats in their environment. By releasing massive amounts of waste into rivers, they deplete oxygen levels and ...

BBC footage shows male hippos fighting for dominance, sometimes for hours, in a brutal struggle for mating rights ...

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 ...