Answer:
I have a brother. However much we run we do not reach each other.
I can generate fear and some say I come out of your ears. I am as quiet as a mouse but not welcomed in the house.
I am what brings things together. Without me everything you see would be a total mass or debris everywhere. What am I?
I have a straight back and sharp teeth to cut objects.
I can be hairy and itchy all over. I can be the scariest thing you have ever seen. I stand in the middle of nowhere, hanging on a stick. What am I?
When is it bad luck to see a black cat?