Picture this: a male Amazon river dolphin swims belly-up to the surface. He tilts his body just right, and suddenly — a thin golden arc sprays through the air before splashing back ... of their ...

Specifically, the male dolphins rolled over onto their backs, displayed their male members, and launched a stream of urine as high as 3 feet into the air. This usually occurred when other males were ...

Males, lying on their backs, spray their ... on bottlenose dolphins showed that they use their tongues to taste urine and identify their peers. Botos might thus combine chemical and acoustic signals, ...