What Am I Riddles

Question: I never sleep yet sometimes I weep. I can get angry or just be happy. Wherever you go I will follow. No matter what you do I will be there. I can not die. What am I?

Question: What Can Make Food But Not Eat?

Question: I live in your house yet, you do not love me. I eat your food, yet you squeal in fright at the sight of me. What am I?

Question: It dies when it's hot, exists when it's cold, you can touch it, but you cannot bounce it, and it doesn't give you any gold. What am I?

Question: What grows shorter as it grows older?