Answer:
It is sometimes known to have silver linings.
Golden treasure I contain, Guarded by hundreds and thousands. Stored in a labyrinth where no man walks, Yet men come often to seize my gold. By smoke I am overcome and robbed, then left to build my treasure anew
Slayer of regrets, old and new, sought by many, found by few.
The man who made it didn't need it. The man who bought it didn't use it. The man who used it didn't want it.
Lighter than what I am made of, More of me is hidden Than is seen.
I am a animal that is cute but dangerous, what am I?