Ever witnessed your pet die?

My very first hamster died on my palm after I got home from a vacation. I think she was waiting for me because my mother told me that she had been acting weird for a few days before I even arrived. When I rushed to see her and took her on my palm, she kind of just laid on my palm and stopped breathing after I snuzzled her fur with the tip of my nose as I always did. It was heartbreaking and remembering it still brings tears in my eyes. That was one of the most saddest things I've ever encountered.