Best riddles with simple answers

In a jungle where there is no streets lights or any other artificial source of lights, I notice a black snake crossing the road. How did I get sight of snake ?

What kind of animal lives longest in zoos?

What do you get when you cross a chicken and a chihuahua?

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?

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 rock group has four men that don't sing?

What can run but can't walk?

What do snowmen eat for breakfast?

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