I like this idea too:
"Perhaps there is no clearer symbol of just how far the iPod has transcended into popular culture than the emergence of the I-Dog, an iPod-themed robotic dog that likes listening to music just as much as you do. Feed the I-Dog some music (which can be done in one of two ways), and he'll display a corresponding light pattern on his forehead while he bobs his head and wags his ears" More here.
For now I'll keep my decidedly low tech, or organic, dog. His singing is just fine with me. Though I might need the WOW car.