Cattle readily eat wild grape (fox grapes, Vitis labrusca) leaves and vines any time the plants are green, but as the grapes start to ripen they seem especially motivated.  Only the vines growing six feet above ground remain unscathed.  While they aren’t as resourceful as goats, who manage to gain extra reach by standing on their back legs or even stacking up on each other, the meticulousness with which the cattle strip out every possible grape and grape leaf within reach indicates that this must be a particular favorite.