well yesterday i took Tigre ( my pitbull ) for a walk and well he pulls me everywhere. well anyways after we ate thanksgiving dinner and when it got cooler we took a wagon ( one for babies and u can buy at walmart ) and he pulled that ( he doesnt have a harness but a really thick coller the wide collers ) and well i wanted to see if he could pull my nephew ( hes 13 ) in the wagon and he weighs around 70... i think, and tigre pulled him so easy! im thinking of getting him a weight pulling harness when we go buy a petsmart or somewhere like that in flagstaff... what do you all think about that?