Cattle are commonly presented to veterinarians for routine and emergent medical procedures. Lower limbs are commonly evaluated by tilting cattle on their sides in a special chute. However, it is currently unknown if cattle (weighing up to 1000-2500 lb.) when on their sides can ventilate effectively. If not, they may require supplemental oxygen during these procedures. We will assess ventilation and if while on their sides, supplied oxygen may improve their welfare.