I remember on the Ron Ely TV show back in the seventies, there was one episode that featured a mysterious feline that might be refered to as a "panthard"--an otherwise normal-coated leopard, with a melanistic "pantherine" head. Was this an authentic color mutation (some sort of incomplete melanism)? Or was this a case of someone getting out the spray-can?
The site has loads of interesting info on mysterious cats and other cryptid wonders that are stll possibly out there lurking in the darkened corners of the world:
This article also contains some tantelizing evidence of a genuine captive black tiger in Ringling Brothers circus. I like how that guy describes how he loved big cats as a boy, and always went to the mall to checked out that same book, and oggle that mysterious photo. I would have done he same for sure!