Great article.

My money's on the goats in a head-to-head. Not that this is a race, of course. Although scrub clearance and effective fire gaps are pretty urgent in many places of the world.

I seem to remember reading a couple of years back about a city farming cooperative (also in California, I think) who would rent out their goats to keep overgrown lots in check.

Bees are another example of such symbiosis, traditionally taken from orchard to orchard by apiarists, for a small fee, to pollinate the fruit trees and stock up on honey inputs in the process.

The practice has died out here in the Valencia region because of strict rules to stop free-roaming bees from cross-pollinating specific strains of oranges and mandarins bred for different ripening seasons and spoiling all the scientsis' hard work, which is rather sad.