Sound-activated: the robot has a built-in sound sensor, allowing your Hedgehog to react to different patterns of claps

Sound-activated: the robot has a built-in sound sensor, allowing your Hedgehog to react to different patterns of claps Get rolling: your Hedgehog is programmed to tumble, roll, spin around, Bristle its spines, and scurry along in response to your claps-clapp once and your Hedgehog curls up into a ball and tumbles backwards one time. Clap multiple times, and it will roll again and again, tumbling once for each clap!