Linked from
The 7 pages that link to Livestock grazing, each with the reason it gives.
Grévy's zebraRelated: Competition with livestock can reduce forage and access to water.
GuanacoRelated: Competition with sheep and other livestock can shape guanaco numbers and range.
Bat-eared foxRelated: Grazing can alter grass height and insect availability in fox habitat.
Bighorn sheepRelated: Grazing can change forage conditions and bring domestic sheep near wild herds.