Starmark Taco Treat Ringer is a mental stimulation toy that keeps pets mentally engaged in an activity they enjoy. Encourages chewing to help keep teeth clean and healthy. Fosters their natural hunting and foraging behaviors helping prevent destructive boredom behaviors. Works with Starmark edible treat rings and features different difficulty levels for a chewing challenge. Made in the USA. Recommended for dogs under 15 pounds Approximately 3.5″ X 1.9″.