Hi.
My 1st Yorkie not only wouldn't go out to potty if it was wet, he never seemed to get used to going in the grass and would potty on the driveway instead. (Was he born a city dweller? Who knows.) I also had to shovel a path through the snow if there was more than a half inch on the ground or he would refuse to even step outside! I never knew if things just looked different out there for him or if it was a icky-texture-on-my-paws sort of thing.
Go figure?