Hippos may look harmless, but their poop plays a deadly role in their ecosystem. This video explores how their waste can trigger dangerous chain reactions in rivers, affecting fish, other wildlife, ...

Few animals look as calm and harmless as a hippo lounging in the water, but appearances can be deceiving. Dangerously so, in ...

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 ...