If you’re thinking this is another variation of tofu, you have a happy image coming. Long ago, the Tartars thought there was a plant that produced sheep. Tethered by an all-important umbilical structure, the sheep grazed in the vicinity of the parent plant. As soon as the surrounding vegetation was gone, the sheep and plant perished.
There is actually a plant this myth is based on, which is discussed here. But most scholars of this sort of thing agree that it was the cotton plant that inspired such creative theorizing.