In my efforts to be brief, I probably misquoted Peter. I think his point wasn't that humans rule the joint, he wondered aloud about whether our urge to dominate and our aggressivness spring from having hardware capable of extracting marrow, and so on.

At least I think that's what he was on about. He's a lot brighter than the limited likes of me.

Willie, p.j. talks about predator's vs. prey's skulls; feeding adaptations of skulls, beaks and jaws; the significance of the human skull in various cultures as an object of art, worship, decoration, etc.; how animals survive without skulls (remember that most of the animals on earth don't have skulls). She's on her feet in the lecture hall about six days a week this time of year, offering six or seven different programs in rotation.