The ancients thought dogs the animals closest to humans because they can feel shame. Wrong--at least for the Weimaraners in artist William Wegman's fashion spread in the August issue of Details. While their master's exhibition of photos, paintings and videotapes graces London's Institute of Contemporary Art this summer, they've been stuck stateside with coat-hanger duty. Posed while . . . er, wearing a variety of designer knitwear, the poor beasts look more dazed than discomfited. But maybe the last bark's theirs and they're really saying, "I wouldn't be caught dog in this sweater. "