That sort of thing happeneds atleast once a year out here. Just last year a man forced his black long haired dog to run with him & his bike when it was 45C, that temp is too hot for us people out here, The dof ended up falling over & shortly after died of heat stroke.

A few yrs back a guy did the same thing to a rotti pup. the pup litterly had no paws left. & chunks of fur & skin was missing all over its body cause it had been draged on its body.. the dog was draged for several km, before cars forced it to a halt to rescue the dog.

Honestly, if the only way to walk a strong dog to to tie it to a car, for gods sake do it right!!!!! When my exfriend first got their rotti, they couldn't walk him cause he would drag them.. so they tied him to the car (they were on a dirt road so there were no other cars) & the driver would drive at the dogs pace & the kids were walking/jogging with the dog... All I can say is that they were glad when I became friends with them, cause I was heavey enough to control him somewhat... But Rocky was never once dragged or forced to run, he was encourged to keep up because he wanted to be with the kids... & they only did this until he stopped & lay on the ground & then they would put him in the car & go home...