Are humans REALLY the smartest species on the planet? don't you think a very valid argument of the opposite could be made?
don't you think our species' dominance is really due in major part to opposable thumbs? (and also perhaps to a genetic-borne complete disregard and disrespect for our own environment...)
personally, i think humans do things that are uncanilly stupid moreso and to way greater extremes than any other species.
And the theory that humans are the most intelligent species perhaps a result of arrogance than true evidence?