4 years & up. Designed for little hands, this electronic canine pal cheers for correct answers and gently redirects children when they answer incorrectly, allowing for independent discovery. Simply press the tip down on the cards to answer. Sets of 36 colorfully illustrated doubled-sided cards (sold separately) provide 72 early learning activities each, plus answer key. Cards measure 4"H x 6"W. Requires 2 "AAA" batteries, not included.