Answer:
A muttered rumble was heard from the pen, and I, in my walking stopped to look in. What was this I saw? A massive beast, hoofed, and jawed. With spikes upon its mighty brow, I watched as he struck the turf and prowled. And yet for all of his magnificence, he couldn't get out of that wooden fence.
My head bobs lazily in the sun. You think I'm cute. For my face is yellow my hair is white and my body is green.
I work when I play and play when I work.
What relies on columns but isn't a house, and asks for help but can't speak itself?
Give it food and it will live, give it water and it will die.
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.