What Am I? Riddles

I repeat only the last word you say. The more I repeat, the softer I got. I cannot be seen but can be heard. What am I?

I roam through the lands hoping to rescue my love. I search high and low, and will stomp on you if you get in my way! What am I?

I run around the streets all day. Under the bed or by the door I sit at night, never alone. My tongue hangs out, waiting to be fed during the day. What am I?

I run but cannot walk, sometimes sing but never talk. What am I?

I run but have no feet. I roar but have no mouth. I wear a belt but have no waist. I always drink but never eat. What am I?

I run distances, often making many turns, yet I never move one foot. What am I?

I run up and down the stairs without moving. What am I?

I run, yet I have no legs. What am I?

I save lives on the ground and in the air. What am I?

I see what you see, feel what you feel, and hear what you hear. I know all of your moves before you make them. I even know the moves you didn’t make. What am I?

I shared by goats, devils, and unicorns. What am I?

I shift around, though always slowly. I never move more than a few inches at a time. A large movement by me can kill many people. I am huge, yet unseen by humans. What am I?

I shoot but never kill. What am I?

I shrink smaller every time I take a bath. What am I?