Answer:
Cycle Cycle Cycle.
They are toothy nocturnal immortals.
I'm the son of water but when I return to water I die. Who am I?
A disposable item to keep your waste organized.
Something you carry while singing.
I never sleep yet sometimes I weep. I can get angry or just be happy. Wherever you go, I will follow. No matter what you do, I will be there. I cannot die. What am I?