Comment: Re:Bullwinkle never knew (Score 1) 235
Instinctual behaviors are not considered planned behaviors. This is a unique display from the chimp in question that other chimps don't do, so it is not instinctual. Previous questions were if it was perhaps a learned behavior or that the initial gathering and stockpiling was unrelated to the use of the rocks to throw at zoo visitors. The fact that he seems to have recognized that he has a better chance of successfully attacking the visitors by portraying peaceful action and concealing his weapons gives much more evidence that this chimp is capable of advanced thought and planning.
...and too much beer.