I haven't read all the posts yet, but I see a lot of mine in them.
I CAN'T STAND anything that has something sad about animals in it, even if I KNOW it will end well. Don't turn on any Lassie movies around me! Refuse to watch "Homeward Bound" or any shows like that. Walked out of Bambi a few times because I wasn't sure when his Mom would die.
Also, when I worked for my Veterinarian Dad, I hated cleaning drool off the exam tables! And people who complained about the bill even though they were told up front what it was going to cost.