But what about the kitties?Feline Immunodeficiency Virus. FIV has been recognized as a syndrome since 1986, and as with AIDS, has been found in stored blood samples dating back to the 60s. Unlike HIV, however, for FIV there's a vaccine. Not that everyone is excited about it.
Originally, this was to be a post intended to provide something lighter until this appeared:
In addition, over 25 large cat species including, cheetahs, lions, and panthers have their own strain of the virus. Despite similarity among these viruses, transmission among species has never been documented. Scientists think that FIV is an old virus and may be the grandfather of all immunodeficiency viruses. Comparison of its' genetic code point to a virus that is millions of years old.