Answer:
I'm a type of pizza that is folded in half before cooking to contain a filling
What can touch someone once and last them a life time?
Just head and foot yet never tires of dancing.
The itsy bitsy teeny weeny yellow polka dot variety is quite popular.
What kind of pet always stays on the floor?
Black we are and much admired. Many seek us if they are tired. We tire the horse, and comfort man, and turn White when we've fulfilled your plan.