The external membranous integument of an animal is called as skin. Skin is also a term used for the hide of an animal which is separated from the body and is then sold dry or tanned. Killing of animals for their hide or skin has been abandoned in many countries, worldwide so as to protect animals from any extinction. Extinction of endangered species is a big worldwide problem. In the words of Alan Watts, “And although our bodies are bounded with skin, and we can differentiate between outside and inside, they cannot exist except in a certain kind of natural environment.” Skin is also the term used for the husk of a plant or fruit. The exterior coat of plant or fruits is called skin. Human beings have skin which might be a little or extra sensitive. Extra sensitive skin needs to be taken care of. People with skin problems suffer from pimples, acne, rashes etc. Here is a collection of quotes on skin.