Answer:
I have a tongue, but do not talk. I follow close, but neither run nor walk. Coupled and hitched, but never married. You couldn't bear the load I've carried.
What's as small as a mouse but guards a house like a lion?
Which button does not function when being pressed?
Twigs and spheres and poles and plates. Join and bind to reason make.
This is rectangular, hollow and has a lid, and where you’ll find it you might wonder, it is just six feet under. What is it?
I'm the source of all emotion but I'm caged in a white prison.