[Mod request] Grazers make burnable dung for low wood biome use

[Tanelorn]

One of the big limitations on arid maps and I imagine the icy maps is the lack of wood. Sure you can build with other materials but much of your low tech producers for heat and cooking need wood to operate. This is critical for tribal starts. In parts of the world where wood is scarce such as Mongolia and the steppes, and for some reason India, fuel comes in the form of dried dung.

Perhaps this could be done as an extra product such as milk? Although I find it extra gross to think that animal status would include "dung progress" and that taking dung from an animal requires an action @_@. Anyway, this would be a HUGE benefit to those on maps with low wood supply.