Answer:
What speeds on a track but isn't in a race and has a whistle to announce its steady pace?
What can elephants make that no other animals can make?
I am used in most sports, have four holes, come in many different colors and there is a state that shares my name.
Children keep their assets in this.
What is black when it is clean and white when it is dirty?
I'm the source of all emotion but I'm caged in a white prison.
Kids
Animal
Difficult
Easy
Food
Funny
Logic
What am I?