Answer:
I have four legs but no tail. Usually I am heard only at night.
What stays on the ground but never gets dirty?
Do you know what you can hold without ever touching it?
It is a path of cow juice spread across the sky but cannot be seen by the naked eye
A precious stone, as clear as diamond. Seek it out whilst the sun's near the horizon. Though you can walk on water with its power, Try to keep it, and it'll vanish within an hour.
What never gets any wetter no matter how hard it rains?