Years ago I read a book that had a scene about a man cursed to become a rat. Who hid his features for the comfort of others. Even going as far as tying his tail around his waist.
In the scene the man would untie his tail and reminisce about how nice it feels to allow it to slide over the cobblestones when nobody could see it.
I've long forgotten the title of the book, but it stuck with me, so I made FanArt. Maybe somebody else might know what book I'm talking about.