It does. There were and are some animals. Zürich had long a black one and now Serengeti Park has one. All adults involved were tested and are all as pure as an amurleopard can be
But thanks for the comment and the exclamation marks.
Yes, this is clearly ingrained deeply in the collective consciousness, this 'no black Amur Leopards' idea - it gets brought up every time a photo is posted.