Answer:
A leathery snake, with a stinging bite. I'll stay coiled up, unless I must fight.
I do not breathe, but I run and jump. I do not eat, but I swim and stretch. I do not drink, but I sleep and stand. I do not think, but I grow and play. I do not see, but you see me everyday.
Come up and let us go. Go down and here we stay.
Twigs and spheres and poles and plates. Join and bind to reason make.
I grow where no flower grows, where no light touches the walls, up or down, that I don't care, was here before people were.
The warmer I am the fresher I am.