The short answer is of course not. Like so many other things in the realm of superstition, there are no facts to back up black cats being bad luck.
Unfortunately, many times black cats sit in shelters like the RISPCA just because of their color. The superstition around black cats is not even a worldwide phenomenon; it’s just a popular belief in the western hemisphere that black cats are unlucky. However, in Asia and the U.K., a black cat is generally considered just the opposite. Of course there are always exceptions – for instance in Yorkshire, England, it may be lucky to own a black cat, but it is unlucky to have one cross your path. (Kind of tough to have it both ways if you live with one.)
Superstitions, like genetics, can be a very confusing subject, indeed…
…and speaking of genetics, even though their coloring is what gives them a bad reputation, these felines may be getting the last laugh after all. The mutation that causes a cat’s fur to be black is in the same genetic family as genes known to give humans resistance to diseases like HIV. Some scientists think the color of these cats may have less to do with camouflage and more to do with disease resistance. They’re hoping that as more cat genomes are mapped, we may get a step closer to curing HIV.
So, not only are these cats beautiful, lucky, and every bit in need of love as any other, they could help humans cure disease… who’s “man’s best friend now?”