BeautySpringz 75% Collagen Spring Dog Chew, 6" are made from the bottom-most layer of beef hide. While the top layers of beef hide are commonly used to make things like shoes and sofas, the soft, more digestible layer called Corium is often used to make sausage casings. This "beauty-is-skin-deep" layer is a potent natural source of supplemental collagen which may support healthy joints, skin and coat.
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