The Funny Bunny is a special limited item (was available from April 13, 2011 until April 21, 2011) that can be obtained by purchasing it for 15 Cooking Cash (until May 10, 2011) or by completing the Mole Challenge (on April 15, 2011) as part of the Pets Challenge.
Effect: Click to animate. Earns 5 coins every minute.
In game description: "You'll be going nuts over the cute little bunny rabbit. Give him attention and love and he'll reward you with 5 coins! That's a lot better than little brown 'presents' all over your restaurant floor!"