Yeah, your professor is absolutely right. And it's so true, and so worth it.

Maybe I'm spoiled. In my childhood, my cats lived to be 19. At 13, Tango's too young to be snatched away from me, and aside from that cancerous lump, he's active and full of vitality. I don't even think he realizes anything is wrong, and it only breaks my heart more. That's why I'm determined to do whatever I can to enhance his quality of life and extend it as long as possible.