This is a very complicated food puzzle. It is two sided, features a maze within the toy on both sides and requires the cats to wobble or flip the toy entirely to dispense food. As this video demonstrates, not all hunting expeditions are successful. She walks away without success but that is ok, intermittent reinforcement keeps the animal doing the behavior! Practice makes perfect. Remember that novel food is helpful to stimulate interest and drive motivation. If your goal is weight loss or busting boredom the toys should be challenging and make them work hard!
Yet another toy designed and marketed for dogs that is great for cats as well. This toy can work for dry or wet food and can be manipulated to achieve different challenge levels, though as a whole it is a beginner toy.