Reward puzzle: this toy; holding in the hand is really quite weighty; natural rubber material; not particularly hard; with a certainThe elasticity; smashed on the ground will also rebound Oh; so better training dog agility!Teeth grinding and cleaning: "Love to bite; that means I really have a lot of fighting power Oh! Bone teeth gum; through the full contact with the dog's teeth; not onlyCan achieve the effect of teeth grinding and cleaning; but also to enhance the development of the dog's jaw muscles! Specially added; milk flavor; so that the dog more like; but alsoCan get rid of bad breath ha ~Food grade material: all natural rubber; environmentally friendly and non-toxic; good bite resistance milk flavor; so that pets prefer a good bouncing effect.Good to ensure that the pet keen training multi-color available; rich life fun.