KONG XS Red Classic Kong Dog Toy mentally stimulating enrichment designed to satisfy your dog's natural instincts. Crafted from durable rubber, this toy is for chewing, chasing, and fetching. You can fill the center with peanut butter, cheese, or treats to create a fun and engaging challenge that keeps your dog entertained and mentally active. Even without treats, dogs enjoy chewing on the KONG and chasing its unpredictable bounce. Made in the USA, this toy is i for small dogs up to 5 lbs and measures 2.25 inches. Model Number: