Short easy logic riddles for teens

I have four legs. I am a pet. I hate cats. I bark.

What has four legs, but can't walk?

You can see me in water, but I never get wet. What am I?

What always comes into a house through the keyhole?

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 happens when you throw a blue rock into the yellow sea?

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

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

It can fill a room without occupying space. What is that?

What can go up a chimney down but not down a chimney up?