Tama-go goes of like every 3 hours of being awake. (and 3 hours after the first and second) Just to say hi. But they CAN loose happy/hungry hearts. So check it when it does. Most of the time when they do this they don't need to be disaplined. But there are other times that they call for no reason and they still call once you press buttons then scroll. Praise/Disapline at your own risk.... many times its a toss up.