Niloticus (Niloticus): has stomata, the belly is not so narrow and long compared with the American crocodile and the bay crocodile, and the circular stripes on the ventral side are the largest, which is obviously different from other species, and the texture characteristics are more in line with the female aesthetics. Leather is generally used to make bags, and many bags of fashion and luxury brands are made of Nile crocodile skin.

Alligator: Its temperament slub pattern is neat and beautiful, with a clear boundary with the circular grain, and the circular grain is dense and relatively small. There are no stomata and there are obvious fissures above the cloacal pores, which are important signs of this variety. Leather is suitable for making bags, especially suitable for making small leather goods, better than other varieties, especially reflecting the charm of the American crocodile, especially for the production of straps, the American alligator is the best leather, and the price of American alligator leather is second only to the bay crocodile.