As compared to PeTA = People Eating Tasty Animals.
I did tip a donkey once. He looked at me and yelled - "What????!! Only 10%?????. I worked my a^s off !!"
I never tip donkeys. They voted for that jerk in Washington, they can get money from him.
Of course, any money he gives them he gets from me first, but it's the principle of the thing.