Answer:
My teeth help me suck.
I am the place to turn when nature calls.
I build up castles. I tear down mountains. I make some men blind, I help others to see. What am I?
When I live I cry if you don't kill me I'll die.
What do you get when you cross a cow with a trampoline?
I have a ring but no fingers. I used to stay still all the time but nowadays I follow you around.