Our test dogs just went crazy for these! This unique, multi-functional bone does so much more than just freshen your dog’s breath and reduce odors. Designed with a natural chewiness to clean down to the gum. The bones design with bristles and a channel in the handle allow a maximum “brushing” surface and better teeth penetration. Made with an optimal blend of soy and wheat protein isolates (a highly digestible source of amino acids) which are the protein building blocks essential for your dog’s good health. Soy protein isolates contain about 90% protein and are low in fat and calories. Be sure to choose the right size Greenies for your dog. These bones are designed to conform to a combination of the dog’s size, and jaw strength. They have natural break points to fit your dog’s jaw. Greenies Lite and Senior dental chews have the same great dental and taste attributes as Original but the lite has less calories (Teenie 25, Petite 54, Regular 88, Large 141. The Senior provides the added health benefits of glucosamine and chondroitin. Teenies are for toy breeds and dogs 5-15 lbs.; petite for dogs 15-25 lbs.; regular for dogs 25-50 lbs.; large for dogs 50-100 lbs.