Answer:
Soft hairy from door to door. I am the pet that always stays on the floor.
No matter how little or how much you use me, you change me every month.
First I may be your servant's name; then your desires I may proclaim; And when your mortal life is over hold all your wealth within my power.
I go in dry and come out wet. The longer I stay in, the stronger my surroundings get. What am I?
I have cities with no people forests with no trees and oceans with no water.
Walk on the living, they don't even mumble. Walk on the dead, they mutter and grumble.