I'm back on livejournal to lob another grenade in the fight from 3 years ago over whether humans are the only animals with lips (
http://existenceproof.livejournal.com/49099.html).
My position, as you no doubt recall, was that only humans have lips. Adri (and Gaea?) disagreed.
According to Question 3 of the New York Times' weird body quiz, "Only humans have a distinct border around their lips. . . . The outline of your lips, called the vermillion border, marks the transition from your skin to the pinkish-red part of your lips. It is unique to humans."
(
http://www.nytimes.com/interactive/2008/10/31/health/20081031_WELLQUIZ.html)
My dog concurs: