Do apes love to gamble just like humans do? You bet! New study by Max Planck scientists reveal that apes can calculate odds before taking risky gambles:
Link
Experts observed apes as they gambled using upturned cups concealing pieces of chopped banana.
Given the choice of a safe bet of a small piece of banana or a larger chunk of fruit hidden beneath one of a selection of shuffled cups, the apes chose to gamble more than 50 per cent of the time.
The team, led by Daniel Haun of the Max Planck Institute for Psycholinguistics found that they were also able to identify when the odds were stacked against them and when it was wiser to go with the safe bet.
As more cups were added and the odds became worse, the apes become more cautious.
Link