Answer:
I do not contain flesh feather or scales; yet I have fingers and thumbs.
I am the kind of ant that's good at math.
What goes through towns and over hills but never moves?
My days are numbered. What am I?
I have no voice but I can teach you all there is to know. I have spines and hinges but I am not a door. Once I've told you all, I cannot tell you more. What am I?
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.