It was a 2D platform shooter where you controlled a bunny with a gun. At the beginning of the game you could choose between two bunnies. One was a bit classy, the other one was a bit more dirty (fuzzy hair and crazy eyes) Each level had a different thema with an endboss at the end. I remember that the second level had a garden/jungle-like theme with a big turtle-thing as an endboss.
Oh, I believe one of the 2 bunnies had the ability to use its ears as propellors when falling down to hover over pits with spikes, etc.
That's about everything I remember about it...
Anyone has an idea of what it might be?