Shadow

As fast as an eagle, as slow as a slug.
As tall as a tree, as small as a bug.
Sometimes in front, sometimes behind.
Never on top. and always aligned.

It's a shadow !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Depening on what has the shadow, it could be large or small, or be moving quickly.

A shadow is never above you, but always in a line ( sun - object - shadow )