This lesson centers on the care and characteristics of natural fibers, specifically focusing on wool as an animal fiber, which is sourced from sheep fleece through shearing. It discusses various types of wool from animals like Marino sheep and the Kashmir goat, highlighting differences in length, color, and fineness that influence the price and quality of the wool. The lesson underscores the importance of understanding these fiber characteristics when selecting materials for different uses, such as choosing the appropriate wool for a scarf.