by Claudine Zap You can always find an episode of " Law and Order " on TV. Seriously. The syndicated shows alone run on some cable networks six times a day. If you have eyes and a TV, you already know this. But what you may not know is that there seems to be an unsung fan base out there: the dogs. You heard right. Videos of pooches howling to the "Law and Order" theme song have gone viral on the Web. (Go ahead and take a moment to hum it yourself, it's annoyingly catchy.