Answer:
A pony trots his way through the world on these.
Who spends the day at the window, goes to the table for meals and hides at night?
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.
What is that which, while it lives, constantly changes its habit, that is buried before it is dead, and whose tomb is valued wherever it is found?
This noble creature has the embarrassing inability to get up once it's been flipped onto its back.
What is always coming but never arrives?