get him on a bike with you ,just a few mile for now and when his about 8 month he will be able 2 do a few more mile ,the bike will improve the dogs stamina ,feet,pads,muscle mass,and heart ,these are all good things 2 have in a dog ,in the off season don,t over do it just afew hours aday then leading up 2 the season start working him harder so he peaks at the right time ,atb gaz