At a zoo, it's usually kids trying to play tricks on the animals, not the other way around.
But in the case of one beluga whale at the Mystic Aquarium in Denver, it appears the children are the "victims." In a stunning video that was posted online, the whale can be seen turning its back to two children and then spontaneously whipping its head back around, as if it were playing peek-a-boo.
Here is a short clip:
Unfortunately, not all scientists are convinced this is a playful action...
"The open mouth and posturing are typical of the way cetaceans express aggression and I've seen a lot in captivity in the very same circumstances. This poor animal is telling the kids: 'Get away'. It's a threat," Dr. Marino told The Dodo.
Marino, who holds a Ph.D. in Biopsychology and has published over 100 peer-reviewed scientific papers, stands on the opposite side of Dr. Tracy Romano, the aquarium's chief marine biologist.
"He's playing peek-a-boo. Boo!" she told CBS. "The kids getting his reaction is really what's spurring him on to keep doing it. This behavior was not trained in Juno... Belugas as a species are very social and playful animals."
What do you think?