1UP: They say dogs are a man's best friend, but six years ago with the launch of the DS, a virtual dog was Nintendo's best friend. The puppy-tamagotchi hybrid set the world ablaze, and is often credited as the game that changed the company's fortunes with the bizarre little handheld system. Now the 3DS has launched, and along with it a new Nintendogs. But are the pups realistic, or too simplistic? To find out, we talked to James Ha, an associate professor of animal behavior at the University of Washington.