Answer:
Until I am measured, I am not known. Yet, how you miss me when I have flown. What Am I?
I am not very commonly found! Only in some rainforest! I have an odd number of toes! I'm very lazy and hang upside down! What am I?
I am a kind of coat that can only be put on when wet.
I regularly change shape yet remain a sphere. I am always there but not often seen. What am I?
I am not alive but I can die. What am I?
The warmer I am the fresher I am.