Wool is also a natural fibre just like cotton. The difference is cotton is a plant fibre whereas wool is an animal fibre and is obtained from sheep or other animals like camel, yak, etc. The process of obtaining woollen fibre from sheep is mentioned below-Shearing- This process involves cutting the hair of sheep using a blade. This process is usually done in the summer season so that sheep may not feel cold. Their hairs reappear in a few weeks. This process does not harm the sheep.Scouring- This process refers to the washing of the hairs and removing dirt from them. Sorting- This process involves separating the hair of different sizes.Dyeing and Rolling- After the yarns are made they are dyed and rolled.Knitting- The woollen yarns are woven into different clothes like sweaters by hands or machines.