An incredibly cute pet by Sega. The cheeks are your left/right buttons and the nose is the "enter" button.

There seems to be multiple outcomes for your pet in the final adult stage.

The animations are cute and the sounds are more than just beeps.

The big downside to the hamster is that the foam that they're made of can wear down and easily be damaged, but this is lessened by getting a case or simply sliding the foam cover off.

The bunny is made a bit differently, and I'm not sure if it suffers from the same issue or if you can remove the outer cover or not.