Interesting premise, executed (figurtatively and literally) rather well.
If there’s one bit of criticism I would leave (which hasn’t already been said), I think it would be worth adding in a bit of wraparound to the game (go all the way to the left -> appear on the right, and vice versa), to prevent situations where the player is effectively marooned on one side of the screen due to the rabbits there all being dead, without a way to reach the rabbits on the other side of the screen. Granted, this might mean having to change the way that the rabbits spawn in to prevent players from easily farming the rabbits for points as they all appear (perhaps have them pop out of rabbit holes in the middle of the screen as well as walking in from the sides?), but it’s still an interesting premise for a game.