You can actually kill it anywhere you like, just decide where you want to release it and chop the rabbit around. It will appear only after certain amount of rabbits you murder. So just save every time after you kill some rabbits. Then you will know when it will come to the last rabbit needed to kill.
The exp is roughly like that. If you had rank 5 wisdom, you get total of 3.5k+. That end the case.
