Your child will love the way Max, The Robo Dog responds when they interact with him. He's designed with sensors to mimic realistic dog movements so he can walk forward and backward, bark, whimper and growl just like a real dog. Pet his back and he'll walk towards you and bark! Max has LED eyes that light up and he will fall asleep if you stop playing with him for 90 seconds. Requires 3 "AA" batteries (sold separately). Wipe clean only. Plastic. 8"L x 5"W x 7 1/2"H. For ages 2+.