Goats to cut the grass

I've heard of using grazing to maintain grass.
Quoting from UofC


Weeder geese. Geese can often be used to manage grass weeds in vineyards. Geese prefer grass species and will eat other weeds and crops only after the grasses are gone and they become hungry. If confined, they will even dig up and eat johnsongrass and bermudagrass rhizomes, which they have a particular preference for. Both of these weeds can be especially troublesome in vineyards. Generally, about 4 geese per acre are needed. They require water for drinking, and some form of protection from predators (dogs, coyotes, etc.). Young geese are preferred, as they eat larger quantities of food, although having at least one older goose, helps to protect the younger birds. Consult the following Website for further information on geese: http://www.metzerfarms.com/weeder.htm. Other animals sometimes used in organic vineyards include sheep and goats. Sheep will effectively remove all weeds down to ground level. Goats are browsers and must be carefully managed to avoid damage to the vines. Both sheep and goats are generally used during the time when grapes are dormant and the chance of grazing damage is minimal.

Dwarf Goats

Apparently Google is doing this as well, bringing in goats once a year to cut the bush back.