Your puppy will soon develop a very strong natural preference for eliminating on similar outdoor surfaces whenever he can. (dogstardaily.com)
It needn't be so difficult, though, if you take advantage of the puppy's natural preference for a routine. (raisingspot.com)
For men whose natural preference is for women, to have s - ex with a man would violate this, which, y» know, makes the case for pederasty. (religion.blogs.cnn.com)