Aww! Cute Mouse Rings a Bell for a Door to Open [VIDEO]

How cute and how smart! Watch this sweet little mouse Grisu wait patiently for his owner to open the door.

Grisu goes and rings the little bells hanging by the door. Then he goes to the door and waits. Then maybe he realizes he didn't ring the bell loud enough so he goes back and does it again. This is one smart little mouse! Talk about an Aww Moment!