There are many types of wool, the most common type coming from the fleece of a sheep. One type is Merino wool, named after the breed of sheep form which it comes. It is popular because of how soft it is, and when it is washed often it doesn't get little balls or fluffy spots.
Other popular types of wool include Angora which is is made from the long-haired Angora rabbit, Mohair, which is actually from a breed of goat called the Angora goat. And Alpaca wool-made from the fur of the Alpaca animal- this is a fiber that is becoming ever more popular. Alpacas are a lot like llamas except that they have been exclusively bred over the years for their fiber.
Of course, there is also the luxurious cashmere wool, which is made from the extra-soft fleece of the Cashmere goat.
Wool has been the go-to fabric of people for thousands of years. There is evidence of wool being spun in Northern Europe as far back as 10,000 BC.
In order to create wool yarn from the fleece of an animal, the fiber must first be washed and rinsed. During the washing process, a substance called "lanolin" is removed from the fiber-this is very moisturizing and often used in soaps. It is then cranked through many rollers, dried, and brushed. After the wool is clean and dry, it is formed into different types of yarn by a process known as "spinning." It can then be woven into fabric and sewn into clothes.