In a New York Magazine article exploring just how goofy some of us get about our dogs (I'm guilty!), John Homan explores the basis of that love, which is, of course, oxytocin.
If you click through from Andrew Sullivan's blog on The Daily Dish, you'll get right to the oxytocin part, which has been highlighted. Slick!
I always advise people that stroking a dog -- yours or someone else's -- is a great way to get an instant oxytocin boost.