Answer:
Until I am measured, I am not known. Yet, how you miss me when I have flown. What Am I?
I wear a red robe, with staff in hand and a stone in my throat. What am I?
I am an instrument capable of making numerous sounds but cannot be touched or seen. What am I?
Four leaves I have.
I describe a toilet cleaner as well as one of Santa's reindeer
Runs over fields and woods all day. Under the bed at night sits not alone, With long tongue hanging out, Resting at your feet until we go for a walk