Answer:
Mouth up it gets filled, mouth down it gets empty.
How many bricks does it take to complete a building made of brick?
Without what would everyone lose their head?
Ancient and majestic, great big piles of stones, Used to encase both riches and bones. Seen from certain angles, They look like big triangles.
Nothing specific, but more than a few. This many clustered, together will do.
I am a animal that is cute but dangerous, what am I?