Thanks for the tips, I actually have some fish oil in my fridge! I'll start giving her that and see if it helps her out and get her the supplements asap.
I really hope that the raise in enzymes were due to the exercise and not heart failure. Do you think that with arthritis, that the possibility of the CPK elevation would be greater during strenuous exercise? It just sounded more extreme than what could have happened as a result of just exercise - which was about 15 minutes of fetch, twice in the morning.
I truely hope that she is fine and it was indeed and anomaly. I don't think I can handle having two sick/dying dogs