There are mainly pig leather, cow leather, sheep leather, horse leather, donkey leather and kangaroo leather, and a small number of fish leather, reptile leather, amphibian leather, ostrich leather. Among them, the cat leather is divided into yellow ox leather, buffalo leather, yak leather and dzo leather. Sheep leather is divided into sheep leather and goat leather. In basically a few kinds of leather, ox leather and sheep leather, its surface is smooth and fine, wool eye is small, inherent structure is close and compact, leather body has better plump with flexibility feeling, physical property is good. Therefore, superior cattle leather and sheep leather are generally used as high-grade products of leather materials, its price is a large amount of leather in the higher class.