Bonobobo... 5-5-25 = -25 1992!

A few captive bonobos recently faced a seemingly simple task: locate a tasty snack hidden under one of three cups. Because bonobos are brainiacs, pinpointing the cup with the treat should have been no sweat.

But there was a wrinkle: the apes were relying on a human, not another member of their own species, to flip over the correct cup. What’s worse, this person sometimes did not see where the food was placed. So the bonobos took it upon themselves to point out the correct cup to their human partner. More Learning...