the influence of feeding stress on digestibility of 12 mongrel dogs was evaluated. six dogs were experimentally stress stimulated (t1) during four weeks and other six were used as control (t2). t1 dogs were stress stimulated by irregularities at feeding time, and by visual, smell and hearing stimuli related to feeding. feces were collected at first and fourth weeks after the stimulus begun. no alterations were found in digestibility coefficients of dry matter, crude protein, ether extract, non-nitrogen extract, neutral detergent fiber and gross energy when determined neither at the first nor at fourth week after stress stimuli.