Here is a cool pair of animatronic ears that can react to sounds around them. EarGear connects to your phone via Bluetooth. Since these are app controlled, they allow notifications. These animatronic ears have a tiny microphone inside to listen to noises around you.
EarGear can turn and tilt. They come with removable covers and a rechargeable battery. If you have a DIGITAiL, you can sync your tail and ears.