And horses and cows produce poop.
(Worked pretty well in the past...and doesn’t tend to ‘splode.)
Rabbit poop is the best poop, doesn’t need much composting. Plus a Buck and three does can feed a family.
We are in the market for rabbits and quail (they are quiet).
Horses and cows also both eat a lot.
It can work but it has to be aged like compost or it can carry all kinds of nasty pathogens. It is abundant but very labor and fuel intensive