Is fur back? When did it ever go away? Every autumn (and most springs as well - fur bikinis, anyone?), designers fill their catwalk with paeans to the pelts of dead animals. Shaved chinchilla, knitted fox, dip-dyed mink, glossy astrakhan (fur from unborn lambs) - every permutation of pelt is available, if only you have the stomach to wear it. And increasingly, it seems, women have.