Answer:
What month of the year has 28 days?
They're up near the sky, on something very tall. Sometimes they die, only then do they fall.
Who is he that runs without a leg. And his house on his back?
I'm not man's best friend, I'm their enemy, I can mark your end, yet you do not see me, I am very small, but very tough, If you have me, then you have it rough.
Look into my face and I'm everybody. Scratch my back and I'm nobody.
People take me on walks and I run and have fun. What am I?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?