Angela's Ashes

this is a snippet of what i've read from Angela's Ashes- a memoir of a childhood by Frank McCourt whic caught my attention:
Dad carried the twins in his arms and they took turns crying with hunger. Mam stopped every few minutes to sit and rest on the stone wall along the road. We sat with her and watched the sky turn red then blue. Birds started to chirp and sing in the trees and as the dawn came up we saw strange creatures in the fields, standing, looking at us. Malachy said, What are they, Dad?
Cows, son
What are cows, Dad?
Cows are cows, son.
We walked farther along the brightening road and there were other creatures in the fields,
white furry creatures.
Malachy said, What are they, Dad?
Sheep, son.
What are sheep, Dad?
My father barked at him, Is there any end to your questions? Sheep are sheep, cow are cows, and that over there is a goat. A goat is a goat. The goat gives milk, the sheep gives wool, the cow gives everything. What else in God's name do you want to know?
moral of the story: kids are curious. give them what they deserve to know.