Natural, “Senior Friendly” Dental Chewable. Helps to control plaque and tartar while promoting fresh breath! Contains dentally helpful ingredients formulated especially for senior dogs. Helpful for dogs with gum tenderness and/or missing teeth. Carefully crafted in the Heartland, USA. Now your senior pets can care for their own teeth too!. Ark Naturals Breath-Less Brushless-ToothPaste combined with Gray Muzzle announces a new addition to the dental category: Gray Muzzle Breath-Less Brushless-ToothPaste. The same benefits as Ark Naturals Brushless-ToothPaste is now in a “Senior Friendly” form! Gray Muzzle’s “Senior Friendly” dental chew is a light, airy structure that is easy for a senior dog to chew. Great for dogs with missing teeth and gum tenderness or dogs who simply prefer a softer dental chew.