I'm so very sorry for your loss! I too went through this just this past December with one of my cats.......took her in thinking she had a simple sinus infection.......found out she had a huge tumor in one lung and it had already spread to 3 of 4 sinuses. Our furry ones can certainly hide things so well from us!
I'm so sorry for your loss. We had to put our old boy Pepe down 2 weeks ago yesterday, so I know how you're feeling. He was 15 and couldn't hardly walk, but it still doesn't make it any easier. You're in my thoughts.
OTN: Log Cabin Afghan, Aran Blanket Baby Afghan, Manos del Uruguay afghan;
Future WIP: A sock. Any sock.