Answer:
I make things short but I am pretty long myself
I am an activity dogs are very good at when a ball is thrown.
As a state in America I am round on both sides and high in the middle.
You can always find me in the past. I am created in the present, but the future can not change me. What am I?
You throw me out when you use me and take me in when you are done.
What never gets any wetter no matter how hard it rains?
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic