I don’t mean among humans; I mean among other animal species. I saw this video in my Google Reader feed for Zooillogix a few days ago and until now, haven’t had time to watch the whole thing. It is rather long. From the very beginning, skip forward about 5 minutes past the introduction and settle in for the keynote speech. From there, you’ll need a little over a half-hour. Very interesting stuff about us, as a species, as compared to our neighbors. Readers of Tammy’s blog will recall her post about some of this professor’s books and her thoughts on them.