Answer:
Long and slinky like a trout, never sings till it's guts come out.
What do you fill with empty hands?
What goes through a door but never goes in. And never comes out?
It's usually found dried, but often kept slicker. Above another need, it's said to be thicker. What is it?
What gets wetter as it dries?
When is it bad luck to see a black cat?