Cats and dogs will love chasing after this cute Scooter Ball Interactive Pet Toy. The fuzzy "hamster" is out for a stroll in his clear exercise ball. Just turn the critter on with the switch on his bottom, place him in the ball, snap it together and put the ball on the floor. Your pet will be in hot pursuit as it scoots around and changes direction when it bumps into furniture. Requires 2 "AAA" batteries. Hamster, 4" x 2-1/4" x 2-1/4". Ball, 5" dia. Plastic, polyethylene, metal and acrylic.