Wind up the clockwork mechanism, place the mouse on the floor, & watch the excitement unfold! The unpredictable movements of the toy mimic the erratic scurrying of a real mouse, triggering your cat's playful pounces & endless amusement, who knows if you ever have a rodent problem at home, your clever kitty will have honed his super pouncing skills. Hunting & playtime are essential for your cat's mental well-being. Our toy stimulates their cognitive abilities, allowing them to strategize & develop their problem-solving skills while having a blast, & it's a great way for you to play together! Colours chosen at random 15cm Length including the spinning tail Simple clockwork mechanism