He is in good shape, not over weight, but he has a recurring problem that seems to be caused by pulling muscles, or tendons, or something.
I walk him quickly about 1 mile each day, and once or twice a week we go to a local park where he chases a ball until he decides he has had enough, after about 10 minutes, and indicates it by going over to the gate and waiting.
Over the last several years, several times, he has apparently strained something, as is the case this week. On Saturday we were at the park and I remember he slipped while running very fast to catch the ball.. he didn't yelp or show any pain, but Monday, yesterday, when he got up in the morning he was obviously stiff, and he yelped several times and the rest of the day, occasionally he would move a certain way and yelp. He seems worse today and I can tell he is not feeling well as he follows me around and looks unhappy.
I'm giving him coated asperin twice a day, but it doesn't seem to help much. He has been on 700mg of Glucosamine with 500mg Chondroitin Sulfate for about 3 months because we suspected he is having some joint pain like our 12 year old Italian Greyhound has. They both eat adult Pro Plan.. should I switch them to the Senior formula?
The last several times this has happened I have taken him to our Vet, who has looked him all over with no specific indication of a painful area. He suspects that by the time he comes in his adrenelin is up, but at home, I've tried the same prodding and lifting his legs, etc. and he gives no indication of a painful area by flinching or yelping or any other communication, so I can't even tell where he is in pain! Each time, our Vet told us to take him home, let him rest it off, and sure enough, within a few days he gets back to normal and is happy again.
Have any of you had similar problems?
I am wondering if maybe the once a week running is not enough, and that maybe he is not getting enough exercise and his muscles are weak so that he is more susceptable to pulling a muscle when he does run fast?
Any help would be appreciated, I hate to see him in pain like this.

and Raul sort of copies everything Tony does.

