Gupi - Intelligent Robot Guinea Pig
If you don't play with him he becomes lonely and scared, and he'll go off and hide in a dark place, but if you stroke him he'll feel loved, and will be happy. Gupi can also hear you, and will react to voices and sounds, depending on his mood. When happy he'll actually come running at you when you call him, but when he's scared he can't stand noise and will run away from it. When happy, Gupi will also follow a light beam so you can lead him wherever you want him to go.