Canadian Brand. Rollover Small Beef Stuffed Beef Bones are all-natural, cleaned beef bones that are stuffed with our premium Beef dog food and baked for your dog's enjoyment. Beef bones are the hardest bones available and with a centre of delicious Rollover Beef dog food, dogs enjoy gnawing on the bone to clean their teeth. Each bone is approximately 5-6" long and 2" in diameter and is individually shrink-wrapped to ensure freshness.