They are then mixed with glue and pressed into sheets, then colored with the same coatings used on leathers. If you are looking at a stiff leather, looks can be deceiving. Bonded leather is only as strong as its thickness, the material to which it may be laminated, and the possible addition of a top urethane coat. Poor bonded leathers are weak and will not last long with use. The best bonded leathers will last longer, but not as long as genuine leather.
Leather is primarily a by-product from an animal used for food.
Mink is one of the few animals which is raised primarily for its skin or pelt. Cowhide is probably the most popular, and is relatively strong. Crocodile, lizard, water buffalo, and goat are other durable skins. Sheep skin and especially lambskin, are relatively weak and will not last as long as the other leathers just mentioned, however, they are especially soft. If it looks good and feels good, it is probably, but not always a better, more expensive grade of leather.