One, but he wishes it was two.
So the one on the right could drive for a change.
Twelve. One to change the bulb and eleven to do the paperwork.
None, PETA can't change anything.
You can unscrew a light bulb!
Because they can only say "neigh!" I wish this was a joke made up by my 7 year old cousin, but she's imaginary.
Echo-location, location, location (Replace "bat" with "zubat" if you wish.)