Answer:
In your fire you hear me scream creaking and whining yet I am dead before you lay me in your hearth.
The more you have of it the less you see. What is it?
I have a straight back and sharp teeth to cut objects.
I tell people to be careful when handling boxes.
It is greater than God more evil than the devil. The poor have it the rich need it. If you eat it you will die. What is it?
No matter how little or how much you use me, you change me every month.
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic