Joss Whedon said this quote
“ I've got a theory, it could be bunnies...I've got a theor-Bunnies aren't just cute like everybody supposesThey've got them hoppy legs and twitchy little noses.And what's with all the carrots-?What do they need such good eyesight for anyway?Bunnies, bunnies it must be bunnies!...or maybe midgets... ”