Answer:
My teeth are sharp my back is straight to cut things up it is my fate.
The more you take the more you leave behind. What are they?
I walk on 4 legs in the morning, 2 legs at noon, and 3 legs at night. What am I?
When you stop and look, you can always see me. If you try to touch, you cannot feel me. I cannot move, but as you near me, I will move away from you. What am I?
I can wave my hands at you but I never say goodbye. You are always cool when with me even more so when I am high!
It rows quickly with four oars but never comes out from under his own roof. What is it?