🐬 TIL: A dolphin named Kelly figured out how to run a scam on her trainers.
At the Institute for Marine Mammal Studies in Mississippi, dolphins got a fish for every piece of trash they turned in. Kelly noticed the payout was the same no matter the size, so she hid trash under a rock and tore off small pieces to redeem one at a time.
Then she escalated. Turning in a stray seagull earned a bonus fish payout, so Kelly started saving one of her fish, using it as bait to lure gulls, and cashing in the bigger reward. She later taught the trick to her calf, and it spread through the pod until gull-baiting was, in the words of one account, a hot game among the dolphins.
Trainers only found her stash when they drained the pool for repairs and discovered a pile of garbage hidden under the rocks. Kelly survived Hurricane Katrina and was relocated to the Bahamas, where she was still going strong in her 40s as of 2018.
Read more:
https://www.theguardian.com/science/2003/jul/03/research.science
https://hakaimagazine.com/features/kelly-the-sassy-dolphin/
#TIL #dolphins #AnimalIntelligence
