Answer:
What is the difference between a poorly dressed man on a bike, and a well-dressed man on a unicycle?
Canine children.
Goes over all the hills and hollows, Bites hard, but never swallows.
I am the beginning of the end and the end of time and space. I am essential to creation and I surround every place.
What runs around the whole yard without moving?
What is yellow, looks like the moon and has seeds?
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic