Complex sentence: A wealthy but childless merchant wishes he had a child, even a hedgehog, and comes home to find that his wife has given birth to a baby boy that is a hedgehog from the waist up.
Split into simpler sentences: A wealthy but childless merchant wishes he had a child, even a hedgehog. He comes home to find that his wife has given birth to a baby boy that is a hedgehog from the waist up.