LeapFrog Explorer Pet Pals Learning Game (works with LeapPad Tablets,  Leapster GS and Leapster Explorer)) Solve addition and subtraction problems in the Fetch-and-Fling competition Follow the words as you walk your dog to earn money for goodies Adopt a playful new learning pal and follow directions to take care of him Teaches reading skills, writing letters, subtraction and addition; Appropriate for children ages 4 to 7 years (grades pre-K to 1) Works with LeapPad learning tablets and Leapster Explorer game systems (sold separately); Does not work with Leapster or Leapster 2 game systems