skycat , i dont understand how jogging yr dog can build the wrong sort of muscle ??????? this just doesnt make sence , ihave always jogged my dogs , and they often do up to 10 mile , and it hasnt stopped them running turning , infact the fitter they get the better they run , i think the problem would of been yr dogs feet, a month without a day off is a lot of work and the dogs pads may have been tender , this would stop it turning aswel as it could ,,,its probably had sore muscles aswell , been flat as a fart , you have to remeber their dogs not machines , its done a 140 mile without a rest ,