Answer:
Though desert men once called me God, today men call me mad. For I wag my tail when I am angry. And growl when I am glad.
What dress does everyone have, but no one wears?
What gets wetter as it dries?
What stays on the ground but never gets dirty?
My first is in some but not in all. My second is into but not in tall. My third in little but no in big. My fourth in port but not in pig. My whole is made in nature's way. For clothing, rugs used every day.
The warmer I am the fresher I am.