/moo with Deathbringer's Will

[Ookami.kun]

OK, so the last few weeks Saurfang has been gracious enough to constantly drop DBW for my guild. Myself and another DK in our guild were laughing at how fun it is to /moo every time we take the shape of a Tauren/Taunka/Beefsteak. I was curious to know if a mod exists that automatically "moooos" when you take that form, and if so where to find it, or if coding one would be possible. I figured I'd throw that out and see if any information arises. Thanks for any help in advance.