dog bone : colored  rawhide knotted bone 

1. This classic knotted chew bone is made of high quality 100% natural rawhide or porkhide with jerky meat
2. Contains no harmful chemicals
3.100% Edible
4. Promotes healthy teeth and gums and assists to reduce tartar and plaque
5. Chewing treats helps satisfy your dog's need to gnaw
6. Various specification, various colors and flavors available:
2-2.5'', 12G; 3-3.5'', 15-20G; 4-4.5'', 30-35G; 5-5.5'' 40-45G,
6-6.5'', 55-65G; 7-7.5'', 70-75G; 8-8.5'', 85-90G; 10-10.5", 120-130G;
12-12.5", 150-160G
7. Also can make the size as your request!

8.best choice for dog chews