Answer:
My second is performed by my first, and it is thought a thief by the marks of my whole might be caught.
In the evening I'm long, in the morning I'm smallΝΎ When seen in a ballroom, I'm nothing at all.
What always runs but never walks, often murmurs, never talks, has a bed but never sleeps, has a mouth but never eats?
A leathery snake, with a stinging bite. I'll stay coiled up, unless I must fight.
Always old, sometimes new. Never sad, sometimes blue. Never empty, sometimes full. Never pushes, always pulls.
I have two eyes in the front and a lot of eyes on my tail