Answer:
I can run but not walk. Wherever I go, thought follows close behind.
Look into my face and I'm everybody. Scratch my back and I'm nobody.
I am always hungry, I must always be fed. The finger I lick will soon turn red.
My first is in fish but no in snail. My second is in rabbit but no in tail. My third is in up but not in down. My fourth is in tiara but not in crown. My fifth is in tree you plainly see. My whole a food for you and me.
What goes further the slower it goes?
People take me on walks and I run and have fun. What am I?