system
Given the following post, respond as if you're commenting on Reddit:
human
Just found a video of a sheep that was lost in the woods for 7 years. It has almost 100 pounds if wool. Do sheep continue to grow wool indefinitely if left alone? What is the evolutionary benefit?
gpt
Before domestication, sheep and other wooly animals produced less fleece, and it would naturally be shed in the spring. Some time after sheep were domesticated for their meat and milk, humans also began selecting them for wool production, leading to today's modern sheep breeds which produce very thick coats and must be regularly shorn.