My cat has lung cancer. He was actually diagnosed a few months ago but he's started going down hill pretty bad lately. His joints are stiff, he has trouble eating, and trouble breathing. But he still tries to eat as much as possible and he still loves to be petted. He still has the will to live and he's hanging in there but it's heartbreaking to watch sometimes. He's been my buddy for 15 years and I knew something would happen eventually but it still sucks.