Using his powerful tail flukes, a male dolphin propels himself upwards to reach the surface. He rolls on his back and flips ...

A new study observed Amazon river dolphins for 218.9 hours and saw males spurt urine into the air 36 times—proof that the ...

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 ...