Answer:
What goes zub zub zub
From that which comes within itself, It builds its table on my shelf.
I am a animal i have sharp teeth i am the of the forest
Creeping on its belly, curled into a ring. Eyes forever open, beware its lethal sting
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.
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.