Answer:
I travel in a gaggle.
I am heavy forward, but backward I'm not. What am I?
What is put on a table cut but never eaten?
I make a loud sound when I'm changing. When I do change I get bigger but weigh less. What am I?
The shorter I am, the bigger I am. What am I?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.