Snowball, a 21-year-old albino alligator at the Newport Aquarium, has died. The aquarium announced the rare alligator's passing on social media Tuesday but did not state a cause of death.

Salt my Albino Alligator tries to run on a GIANT exercise wheel! Noah, Jay and Mike try to see which of our animal ambassadors enjoy our new exercise wheel!

In a social media announcement Tuesday, the Newport Aquarium announced the passing of a rare albino alligator and said he lived for more than two decades. “Snowball was a tremendous ambassador ...