Answer:
A leathery snake, with a stinging bite. I'll stay coiled up, unless I must fight.
Useful tool for who in darkness dwell. Within you, corrupting like a deadly spell.
What has two hands, a round face, always runs, but stays in place?
What goes in the water black and comes out red?
I move without wings, Between silken string, I leave as you find, My substance behind.
What covers its face with its hands, speaks no language, yet most known what it's saying?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?