Answer:
What goes in the water red, and comes out black?
What binds two people yet touches only one?
I move without wings, Between silken string, I leave as you find, My substance behind.
I am a box that holds keys without locks, yet they can unlock your soul.
If you have it, you want to share it. If you share it, you don't have it.
People take me on walks and I run and have fun. What am I?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?