Good Riddles

Question: 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.What am I?

Question: The more you work, the more I'll eat.You keep me full, I'll keep you neat. What am I?

Question: What runs around the house but doesn't move?

Question: No matter the shape I sit in, you'll find me in a row. Although my name has no letters, my initials are MNO. What am I?

Question: What goes on four legs in the morning, on two legs at noon, and on three legs in the evening?