Bring home the Wappy Dog to take yourself to the next evolution of virtual pets. It lets you communicate with the virtual pet and receive intelligent feedback. You get to play mini games with the Wappy Dog, converse with it, and coach it like a real dog. The fascinating Wappy Dog DS game is playable in Home Mode and Travel Mode, which give you a whole lot of gaming fun and unprecedented levels of interaction. You can also change the name of the virtual pet and do other cool stuff. You customize its physical appearance by changing its accessories and colors. The Nintendo DS Wappy Dog allows you to develop its unique personality, skills and mood through your interaction with it. The Wappy dog will evolve from a puppy to adult, changing just like a real pet.
I checked for these on Amazon and found some for a slightly lower price, but shipping was not free. Stock seems to be limited, too. Jut FYI.