A new study observed Amazon river dolphins for 218.9 hours and saw males spurt urine into the air 36 times—proof that the behavior is more common than we thought.

A very rare natural spectacle was filmed by whale watchers at the end of January in Carmel Bay off Monterey County, California. A huge school of Risso's dolphins plowed through the water. It took a ...

Bald eagle eggs typically hatch after 35 days of incubation, according to the East Tennessee State University. But Jackie and ...