If I understood correctly, the idea is getting as much rabbits as possible, while still maintaining just the right amount of money to feed them all. I think this concept can be expanded. Maybe, for example, the goal would be to get a certain number of rabbits by the end, and there would be some random wolves that would try to eat your rabbits if you didn't scare them away? Perhaps this is not the best example, but what I'm trying to say is that the game, in my opinion, lacks some challenge, or general purpose, as the coins are basically infinite.
Nonetheless, visuals are very nice and cute! You did great!