Thank you everyone. Tiger passed away last night. I took him in for the biopsy last Monday and by Friday his condition took a turn for the worse. He was fine right after the biopsy but on Friday he stopped eating. He would drink water but he could barely swallow. It seems that the tumor spread to his lungs and the exterior tumor grew shockingly large and had red welts on it. He could barely walk and you could tell it caused him pain. But he held on until Sunday--just lying on the couch. I can't believe how fast this took him. I am thankful that I didn't have to put him to sleep and that I was able to be with him when he went ... but it was so incredibly sad. He didn't want to go. He kept fighting. I don't want to ever have another pet vaccinated!