Disclosed in the present invention is a reforming process of animal skin for dog chew, comprising the steps of: 1) pulverizing leftover bits and pieces of skin, wherein the pulverized skin granules have particle sizes of 0.5 mm- 20 mm 2) soaking the skin granules in clear water for a time not less than 2 h 3) melting the soaked skin granules at a predetermined temperature into colloid, and extruding the colloid to form a whole piece of animal skin. The reformed animal skin produced by the process has a homogeneous structure and no granular sensation, and thus has improved product quality. Furthermore, since no gelatin or other adhesives is added, the reformed animal skin has excellent flexibility almost without difference compared to that of the original animal skin, which makes the subsequent knotting processing easy and convenient.
