Answer:
What jumps when it walks, but sits when it stands?
I can speak with my hard metal tongue. But I cannot breathe for I have no lung
I go around a yard but does not move.
No matter how little or how much you use me, you change me every month.
By myself, I'm practically nothing. Worthless as a leader, but when I follow a group, their strength increases tenfold. What am I?
When is it bad luck to see a black cat?