Answer:
I am quick when I'm thin. I am slow when I'm fat. Wind is my worst nightmare. What am I?
Soft, hairy, from door to door. I am the pet that always stays on the floor. What am I?
I am a room that has a roof but no walls. What am I?
If two is company and three is a crowd, what is four and five?
I regularly change shape yet remain a sphere. I am always there but not often seen. What am I?
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic