Claiming that "a nude horse is a rude horse," the group used moralistic language to demand that all animals standing over four inches high or longer than six inches be clothed in public for the sake of "decency".
The Society for Indecency to Naked Animals (SINA) was an elaborate satirical prank created by Alan Abel that ran from 1959 to 1963.
Comedian Buck Henry played the role of the earnest president, G. Clifford Prout, appearing on major news programs like The Today Show and The CBS Evening News with Walter Cronkite.