Dog - animal. It's a pet. He has this bone - it's the most important thing in the world, carries it everywhere he goes. And ah - one day he goes down to the water and he sees another dog with a bone, reflected on the surface. It’s identical and he wants that bone too. So he opens his mouth to grab it - and his bone falls in the water and it disappears. It’s gone. And he’s left standing there… looking at himself. And he has nothing.