A British gallery was asked to take down a picture on that classic theme of Leda and the Swan on the basis that it "condoned bestiality". (It also presumably condones disguising your self as a swan for nefarious purposes and delivering infants in the form of an egg.)
In a month of display apparently the only person to complain was the police officer who go it removed. You can see the picture, which is admitted a little more literal than most here (NSFW).
p.s. Zeus didn't choose the swan at random, it is one very few birds that is actually packing something in the penis department.