Alright, let's all admit it - we talk to our pets in that funny pet voice. Who's a good dog? Well, there's been a lot of research on your use of this voice to talk to dogs as well as babies. What exactly are you doing with your voice? And most importantly, does your dog know what the heck you're saying? Does it help to talk this way? Let's find out. And here's something you never thought of if you've ever tried to train a parrot or parakeet to speak: how come you DON'T use your "pet voice" in this case?