Flutterby™! :

Via Edgecase (and I think this was also mentioned in Borklog, although the link there broke with a VB Script error), stone throwing baboons take revenge on driver. What's remarkable about this is that they waited for and identified the same car to come down the road, and that they appear to have planned and executed a fairly complex ambush. One of my issues with many of the philosophies I grew up with and have been exposed to is the differentiation between human thinking and those of the "lesser mammals". Between cell-phone salespeople and tactically savvy gorillas I sure see anecdotal evidence of substantial overlap.