At what point do I know the cancer is too invasive for me to even try any remedies? It is so strange that he never, ever coughs. 

I have been so upset that I may have said his age wrong....he is 4.5 years old. He has had lots of problems in his short life. He has hip bones which basically decayed. He was diagnosed with an autoimmune condition from vaccines before that and on prednisolone for a long time. He also suffered from a severe case of urinary crystals and was catheterized for nearly a week at a hospital. I am not sure if any of these issues are connected to his osteosarcoma. I own two of his cousins and am friends with the owners of two of his half siblings who have no issues. Only poor Rocky got the short straw.  We elected at the time of amputation not to do chemo, and we were told quite honestly he would decline because they felt his.osteosarcoma was presenting more like the canine form than the feline form. He is a maine coon who we always said was like a dog, so how ironic.

Thanks, Everyone!

Cami