Logic Riddles

Question: A spirited jig it dances bright, Banishing all but darkest night. Fire can't kill it but water can. Share it, it won't get less unless wind will ruin it.

Question: I can fall, I can sink, I can lay underground I can go on, I can go off, I can go up, but not down If you want to stop me: I give you 2 choices The same as Neo had What am I?

Question: A deer ran through a glass door on the back porch of a house. It broke through the large exterior pane of glass and ended up inside the house. Why did the deer do this?

Question: While the barracuda uses opportunity and speed to prey on other large fish, it has little interest in humans. Barracuda attacks on humans are rare; but when they do, what is the reason?

Question: I have existed for centuries, but last only a month. What am I?