Redbarn Natural White Knuckle Bone (5 Bones) 5 Individual Bones Ideal for satisfying large dogs chewing needs Natural way to clean teeth and exercise muscles White Knuckle Bone occupy a dog during travel time or to help alleviate separation anxiety. They provide an enjoyable chewing experience and satisfy a dogs natural carnivorous instincts They improve the dog's dental health by giving the dog a chance to exercise gums and scrape teeth.