For generations the people of the Himalayan highlands in Nepal have been making this hard cheese. This rock hard Churpi is made from milk, salt and limejuice. No chemicals or preservatives are used in the making of this unique long lasting human grade chew. Dogs are attracted to the slight scent of cheese that ChurpiChews naturally emanate. ChurpiChews soften slightly as dogs work them making a long lasting, low-fat, cheesy experience that they love. Please supervise your pet when using any consumable.