When a person walks a dog with a leash there is a continuous transference of haptic information so that the handler can update the animal’s position. The leash transfers information that can help or disrupt postural stability of both human and animal. During dog walking, handler and dog are “anchored” to each other via haptic perception. The purpose of this study was to investigate whether or not a dog walking on a treadmill can provide stability to the postural control of a human adult who is challenged with different task constraints (e.g., vision occluded, elevated surfaces). Thirteen blindfolded college students remained still for 30 seconds in a feet-tandem position on four different surface heights (i.e., level, 10 cm, 20 cm and 30 cm high). Experimental conditions included the individual to hold, while standing on the force platform, the leash of a dog that simultaneously walks on a treadmill. Control conditions included full vision, and no dog. Using a power spectral density analysis, we submitted the mean value of the total power of the COP (center of pressure) signal in the medial-lateral ML direction of sway to a three-way ANOVA with repeated measures. Task conditions (baseline vs. dog) showed a main effect (F1,12=9.5; p= .01; ηp2 = .4; Power= .81), with holding a dog task providing near 50% less amount of sway. Vision condition also showed a main effect (F1,12=84,4; p