Answer:
What type of shoes do spies wear?
I am heavy forward, but backward I'm not. What am I?
I am a word. I become longer when the third letter is removed.
I am a sharp looking horse with a flaxen tail. The longer I run the shorter my tail becomes.
When I am alive, people sing. When I am dead, people clap hands. What am I?
Dark, feathery, and popular in Baltimore and fantasy books.