Canadian Brand. Rollover Small Beef Stuffed Chewbies are 100% digestible beef trachea filled with our premium Beef dog food and baked to be a delicious, crunchy treat. Trachea is an excellent natural source of glucosamine and chondroitin, making these nutritious snacks ones that can benefit your dog's joint health. Small Chewbies are each approximately 4" in length, 1" in diameter and are packaged in a resealable pouch to maintain freshness.