According to Amazonian folklore, the area's male river dolphins are shapeshifters (encantade), transforming at night into handsome young men who seduce and impregnate human women. The legend's origins ...

Researchers say they have made a startling discovery in the Amazon River. But their evidence wasn’t collected from the water—it could be seen from shore. After around 219 hours of observations, they ...

Male Amazon river dolphins have been documented rolling upside down and firing a stream of urine into the air. As if that isn’t bizarre enough, other males will usually seek out the urine as it arcs ...