I hate to tell you that there are Black Panthers all over the South. They are spotted in every outlying suburb of Atlanta and all the southern states. They are not Jaguars. They are a mutated coloration cougar/mountain lion/panther.
In addition the Black Panthers make a noise that mimics a human’s scream or a child crying. That’s what I heard that night outside our house. The two Black Panthers were crying and it sounded like a child crying out. It was right after that that my husband looked out the window and saw them in the middle of the street. We have a streetlight in front of our house. They were illuminated and they were Black. About the size of Bobcats with long tails.
"Panther" is a non-scientific term given to any number of species. If you mean black pumas/mountain lions, I would think in the era of cell phones we would have some documentation of that phenomenon.