Clean riddles

I have four legs but no tail. Usually I am heard only at night. What am I?

What kind of animal lives longest in zoos?

I don't have wings, but I can fly. I don't have eyes, but I will cry! What am I?

I have a little tail. My nose is called a snout. I live on a farm. I can say, "Oink-oink" I am a...

What can run but can't walk?

I may seem real yet I am not, Once you're gone I'm often forgot. Time here stretches and it shrinks, It all depends on how you think. I may be good, I may be bad, I may be the same as one you've had. What am I?

At the sound of me, men may dream or stamp their feet. At the sound of me, women may laugh or sometimes weep.

I have three eyes but only one leg. I still close one even if you beg. What am I?

You saw me where I never was and where I could not be. And yet within that very place, my face you often see.

I eat insects. I live in the pond. I hop. I am green. What am I?