Adjustable size: three adjustable food compartments with outlet sizes 0.47 inches, 0.63 inches, and 0.79 inches, suitable for pet food pellets of different diameters; accommodates dogs from small to large. Versatile and growthenhancing: suitable for indoor play, outdoor adventures, training sessions, and rewarding moments. This duckshaped feeder adapts to various scenarios and becomes a cherished companion in your pet's growth. Unique duck design: this playful duckshaped interactive dog feeder combines slow feeding with fun interactions. It not only encourages healthy eating but also stimulates your dog's mind, making it an ideal dog food puzzle feeder for dogs of all sizes. Healthy eating: the slow feeder feature slows eating speed, promotes better digestion, and helps prevent bloating. The design supports portioncontrolled feeding to keep your dog healthy and satisfied. Practical use scenarios: Mealtime at home to promote slower eating and better digestion. Training sessions as a reward or challenge to maintain engagement. Outdoor adventures or travel to keep your dog mentally stimulated and entertained.