We measured human outcome expectations based on the following two items from prior research : 1) Regular dog walking would help me to maintain or lose weight; 2) Regular dog walking would allow me to get to know my neighbourhood (α = 0.69) and measured canine-based outcome expectations with the item: Regular dog walking would help keep my dog healthy. The items began with the phrase “Assuming you walked with your dog daily, how likely or unlikely is it that each of the following would occur?” and were scored from 1 (very unlikely) to 5 (very likely).