[nickff]

Horses actually have incredibly high emissions, and they produce a great deal of waste. Take a look at what major cities were like before the car became common.

[slavapestov]

It depends on the scale I guess, but if you just have a handful of horses on a farm you use the horse shit as fertilizer for growing hay.

[redtexture]

And in a city hundreds of tons of manure to pick up off of the streets.

[torgian]

Yeah. At least shit is reuseable.