Best short riddles

What has five eyes, but cannot see?

If an electric train is going east at 60 miles an hour and there is a strong westerly wind, which way does the smoke from the train drift?

What is a Owl's favourite subject at school?

I eat other animals. I have a big mouth. I am green. I live in the water. Who am I?

I had no father, only a grandfather. I shall bear no sons, only daughters. What am I?

Thirty white horses on a red hill. First they champ, Then they stamp, Then they stand still. Who are they?

I can be as thin as a picture frame but my insides have many things you can see. What am I?

What do you get if you add 3 to 300 five times?

What has a neck but no head?

When you have me, you feel like sharing me. But, if you do share me, you don't have me. What am i?