Answer:
By myself, I'm practically nothing. Worthless as a leader, but when I follow a group, their strength increases tenfold. What am I?
I am commonly abbreviated to H
They come at night without being called and are lost in the day without being stolen. What are they?
I am the noblest musical instrument
Of the king I am blue and of the peasant I am red. Of the frog I am cold and of the dog I am hot instead.
Runs over fields and woods all day. Under the bed at night sits not alone, With long tongue hanging out, Resting at your feet until we go for a walk