Answer:
Only two backbones and thousands of ribs.
What is the thing which, once poured out, cannot be gathered again?
What can go through glass without breaking it?
It is the electronic version of junk mail or a salty meat in a can.
They have not flesh, nor feathers, nor scales, nor bone. Yet they have fingers and thumbs of their own.
What is so fragile that saying its name breaks it?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?