Sheep drop wool when hit with a sharp weapon

I propose adding a mechanic—like in older versions—where hitting a sheep causes it to drop wool. However, this would require using a sharp tool, such as a sword or an axe.

This way, early on—before crafting shears—you could obtain wool without killing the sheep.

But I would make it so that wooden tools don't shear the sheep; only stone tools or better would work.