Answer:
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.
The strangest creature you'll ever find: Two eyes in front and many more behind.
It has 8 arms and lots of ink but can't write a word.
What goes in the water black and comes out red?
A close relative of ketchup that people often spread on their dog.
All about, but cannot be seen, Can be captured, cannot be held, No throat, but can be heard. Who am I?