I have taken my dog out to run while I ride. usually its not intentional but rather when I am opening the door to get the bike out he bolts for it. Once he is out he wont come back inside if you call him, so I figure if I ride around for a while he will follow me. I found that I have to ride at a fast pace for at least 3-4 miles to tire him out before he will willingly go back in the house. Now my dog is in no way a threat to anyone, he is an Igpin (Itailian grey hound and mini pincher mix). He just likes to run, its the greyhound in him. If I slow down he gets distracted and wanders around but if I keep up a good pace he stays right by my side.