Edge: Nintendogs are immune to the ravages of time. From the day they are brought home to the moment the cart is retired to some forgotten sock drawer, the puppy remains forever young and unchanging. Ever noticed how dogs look like their owners? Nintendo, so good at creating these endless days in the sun, is not one to change them. Nintendogs + Cats arrives in the cartridge slot as preppy and playful as the game before it. Almost too much so.