Answer:
who do you think you know but sometimes you don't
What is full of holes but still holds water
I am a fire's best friend. When fat, my body fills with wind. When pushed to thin, through my nose I blow. Then you can watch the embers glow.
How far will a blind dog walk into a forest?
Come up and let us go. Go down and here we stay.
I am the fountain from which no one can drink. For many I am considered a necessary link. Like gold to all I am sought for, but my continued death brings wealth for all to want more.