The Cheese™ toy is an exciting game of peek-a-boo with 2 mice that pop out of each side of the swiss cheese block. Your cat will love the hunt! For surprise play sessions, use Play While You Are Away mode to keep cats engaged throughout the day. Key Features: •2 mice play peek-a-boo from either side of the block of cheese •Play While You Are Away mode allows spontaneous playtime throughout the day •During single play sessions, timer automatically turns toy off after 10-15 minutes •For cats of any size •Uses 3 x AA batteries (not included