Animal glue was the most common woodworking glue for thousands of years until the advent of synthetic glues such as polyvinyl acetate (PVA) and other resin glues in the 20th century. Today it is used primarily in specialty applications such as lutherie, pipe organ building, piano repairs, and antique restoration. Most animal glues are soluble in water, useful for joints which may at some time need to be separated. Alcohol is sometimes applied to such joints to dehydrate the glue, making it more brittle and easier to crack apart. Specific types include hide glue, bone glue, fish glue, rabbit skin glue. Significant amount of solid waste are produced including trimmings, degraded hide and hair from the beam house process. The solid wastes can represent up to 70 % of the (wet) weight of the original hides. Large amounts of sludges are also generated. Solid wastes can be utilized to manufacture utilizable products like dog toys, gelatin, glue, shoes etc. An animal skin consists of about 61% water, 34% fibrous proteins, 1% globular proteins, 2% lipids, 1% natural salts and some other ingredients including pigments. Out of three layers, the epidermis, dermis and the hypodermis it is the dermis which is later transformed into leather. The epidermis primarily composed of keratin has hair which is removed and the hypodermis has flesh and blood vessels which are also removed. In leather processing, the basic operations revolve round cleaning the skin of unwanted inter fibril material through a set of pre-tanning operations in the Beam House, processing the leather permanently by means of tanning and adding aesthetic value during the post tanning process. The starting material in most cases is raw hide or skin which has been preserved temporarily by the addition of common salt. There is a good scope and market potential for this product. New entrepreneurs should venture into this field.