it's a real nice animation by run wrake entitled 'rabbit'.
here's what they have to say about it on the animate! website:
A selection of 1950s educational stickers, discovered in a provincial junkshop twenty years ago, provide the ingredients for this adult fairytale.
When a boy and girl find an idol in the stomach of a rabbit, its magical abilities lead to riches, but for how long?
I really loooove the way it was put together, and the story is quite charming too - though i am not sure how much i agree with the hacking up of rabbits and cows - those horrible horrible children, heh. i'm glad they get their come-uppance!