Human beings that decide to act in a non-human way.
Person A: Why does your room have a giant nest next to your bed?
Person B: I take care of a friend who likes nonhumanizing himself a lot; I'm too lazy to take it out of the closet every time he comes here.
Person A: Do you have something planned for later?
Person B: Yea! I have planned to find an owner.
Person A: Why would you want to find an owner? Did you find a dog?
Person B: No, I wish. Lately, I've been feeling lonely when I nonhumanize.