Trixie Pet Products Memory Trainer Activity for Dogs, Bright Green/White Set includes: food dispenser, rotating reservoir with adjustable opening, remote release button, peg, suction cup, small scoop Demanding game that requires practice and concentration Dog earns reward by pressing the remote release button which triggers the food dispenser Increase the level of difficulty by varying the placement and distance between the release button and the food dispenser 3 AAA batteries and 4 C batteries (not included)