Yesterday, we bought a bunny. She is a mini-rex that is about 8 weeks old. As a mini-rex she will end up being only about 4 pounds when she is fully grown. She is going to be a pet for our children, but more importantly she is going to be a manure machine for our yard. Rabbit manure is supposed to be among the best available, and my yard needs a ton of manure so she cannot poop enough.