River dolphins observed spraying urine in social behavior study in Brazil

Canadian biologists observed male river dolphins in Brazil engaging in unusual behavior. They documented 36 instances of dolphins spraying urine up to 3 feet into the air, often in the presence of other males. This behavior may serve a social function, possibly related to communication among the dolphins. The researchers suggest it could be a form of chemical signaling rather than just a natural need. The study highlights a unique aspect of dolphin behavior, which may relate to territory marking or social interactions. The findings were published in the journal Behavioral Processes.