Answer:
Why are there no living cats on Mars?
I am free the first time and second time but the third time is going to cost you money.
Never resting, never still. Moving silently from hill to hill. It does not walk, run or trot. All is cool where it is not. What is it?
What is the edge of earth and bread?
I break away from my pack. I create holes in my victims. I can travel for miles and then disappear. I am part of a dying breed. What am I?
I am a mini solar powered computer.