Hi My 6 1/2 year old GSP runs & runs especially with other dogs...But on occasion I have noticed after one of these mammoth plays that her hind legs appear stiff when walking! is there any supplement that I can give her to help!?

Hi,
   My old Aussie boy is struggling on his back legs and is very stiff in the mornings especially.... We give him Glucosamine & Chondroitin and Devils Claw, both which you can get from Holland & Barrett.
He was on Flexicam also (from the vet) but is now trying steroids to see if it makes him more comfortable.

Hope that helps,
Gabrielle

Could be muscle spasm or something also.  One of my friends dogs used to suffer after being in water but health tests etc. were all fine.