0 the threatened black rhinoceros, and the hunting permit is expected to fetch up to $1 million. here is ed lavn dandara. reporter: coming this close to a black rhinoceros is rare. there are only 5,000 left in the world. in the country of namimbia in southern africa, only 700 alive. thousands of miles away in the convention hall in texas, the dallas safari club says they have a way to save the ancient beast. the group will auction off a permit from the namimbian government to kill one black rhino. the president ben carter says that sacrificing one animal for the greater good is smart conservation. it is going to raise more money than any other way you could do to help to provide for all of the conservation needs that we need. and it has sparked death threats which the fbi is investigating and also a vicious debate of how to save the species. and a conservation group in africa call it a joke. tell us where you are, marcia? i m in africa. reporter: and she is with the rhino tru