Maybe to a small degree. Grazers might keep the non native grasses and invasive weeds in check (although that has historically been the job of wildfires). Graz

Maybe to a small degree. Grazers might keep the non native grasses and invasive weeds in check (although that has historically been the job of wildfires). Grazers aren't going to eat mature oaks, toyon and other woody natives though. The canyons near me have plenty of deer but the canyon is still overgrown and full of fuel.