This intersting post from Cryptomundo.com comes from Dave Pelly in Florida. Pelly has been gathering information to prove that central Florida supports a small population of the jaguarundi(Puma yaguarondi), a cat not known to be established further north or east than the southern regions of Texas and Arizona.
COMMENT: I love these types of mysteries, especially from my old home state. Though much smaller than the cougar (which is now known to be closely related), the fact that black or nearly black jaguarundis exist might account for some "black panther" reports from the American South. Good luck, Dave.