Hartz Rawhide Bone, Natural, for Medium/large Dogs, 7 Inch (Pack of 4) Pack of 4, 7 inch bones, For Med/ large dogs - 20-50 lb Hartz Nantural rawhide  All Nantural, no No preservatives for enhanced enjoyment Long lasting chew. Satisfies your dog's instinctive urge to chew , which reduces plaque and tartar. Rawhide chews help prevent tartar buildup, and promote gum health.