Answer:
Black and scary, small and hairy. In the night you hear it preach, Through its noisy high pitched screech.
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.
Known as a great deceiver, It is evil's incarnation, Once used for veneration, The root of all procreation. All you can do is shiver, When it begins to slither.
Creeping on its belly, curled into a ring. Eyes forever open, beware its lethal sting
Dark, feathery, and popular in Baltimore and fantasy books.
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.