Plasma cortisol and testosterone concentrations were measured in three male goats before and after transportation for 15 min in a quiet trolley, a noisy trolley or a motorized van. Cortisol concentrations remained within the basal range (1-5 ng/ml) during the control periods and during the trip in the quiet trolley. However, maximum values of cortisol (13-24 ng/ml) were achieved by 15 min after transport in the noisy trolley; concentrations of greater than 27 ng/ml were recorded immediately after motorized van transport. Plasma testosterone values ranged between 0.5 and 4.0 ng/ml and were unaffected by any mode of transport tested. It is concluded that adrenal cortex activity in male goats is stimulated more by noise than motion.