For generations the people of the Himalayan highlands have been making this hard cheese. This rock hard Churpi is made from milk, salt and lime juice. No chemicals or preservatives are used in the making of this unique long lasting human grade chew treat. Dogs are attracted to the slight scent of cheese that ChurpiChews naturally eminate. ChurpiChews soften slightly as dogs work them making for a long lasting, low fat, cheesy experience that they love!