Four Challenges & Levels 1-3: Multiple games with a flip game and a linear track sliding game, all requiring dogs to learn steps and find treats. This puzzle is designed to be more fun and difficult, with more unique ways to play. It can enhance your dog's IQ and train their sense of smell. Prolong the Feeding Time: The 14-hole food storage slow feeder has four ways to play, which is effective in slowing down the dog's eating speed. It is also beneficial to the dog's physical and mental health by increasing the time and difficulty of acquiring food, thus avoiding gastrointestinal issues caused by indigestion.