Ah, this is what the Intarweb is for: a strange yet very funny Flash animation and song about a cow rebellion fighting for bovine freedom.
Song by Dana Lyons, animated by Bjørn-Magne Stuesøl.
Definitely don't miss this, it's an oldie but goodie: http://www.cowswithguns.com/cowmovie.html [embedded YouTube] | large screen Flash version - Thanks wade7!
Ah well, it will take you decades to get to the Usenet archives....