Answer:
What force and strength cannot get through, I with my unique teeth can do. What am I?
What is made of wood, but can't be sawed?
I am a table you can eat. What am I?
I work when I play and play when I work. What am I?
You hear me speak, for I have a hard tongue. But I cannot breathe, for I have not a lung. What am I?
Give it food and it will live, give it water and it will die.