Answer:
I know a word of letters three. Add two, and fewer there will be!
Just head and foot yet never tires of dancing.
It's like food but water kills it. What is it?
Lovely and round, I shine with pale light, grown in the darkness, a lady's delight.
A shimmering field that reaches far. Yet it has no tracks, And is crossed without paths.
When is it bad luck to see a black cat?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?