Answer:
My teeth help me suck.
Who makes it, has no need of it. Who buys it, has no use for it. Who uses it, can't see it. What is it?
Ripped from my ancestors home beaten and burned I become a bloodthirsty killer.
The more of this there is the less you see. What is it?
I have a small hill with seven holes. What am I?
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.