Thanx for the help,girls. He's 7 months,now. I took him to the vet about 2 weeks ago. Doc said he's a happy and healthy pup. Since he's old enough, I think I will start to take him... but real slow. Today, I will probably run with him for a couple of laps around the block and see how he does. I might alternate between running and walking with him for some short distances before I do any real running with him.I think he will do fine- I just wanted to make sure before I tried it. I knew you ladies would be a good resource. I will keep you updated. Thanx, again!