The BLACK JAGUAR is a color variation of the big cat that is the only living Panthera species native to the Americas. The jaguar is the third-largest feline after the tiger and the lion, and the largest in the Americas. The jaguar's present range extends from Southwestern United States and Mexico across much of Central America and south to Paraguay and northern Argentina.
A Black Panther is typically a melanistic color variant of any of several species of larger cat. In Latin America, wild 'black panthers' may be black jaguars, Panthera Onca; in Asia and Africa, Black Leopards, Panthera Pardus; in Asia, possibly the very rare Black Tigers, Panthera Tigris; and in North America they may be Black Jaguars or possibly Black Cougars, Puma Concolor – although this has not been proven to have a black variant), or even smaller cats.
Since the 1960′s it has been considered politically incorrect to call a black cat a black panther. The big black cats are black leopards or black jaguars and are not referred to as black panthers by anyone who knows anything about big cats.
Jaguar, As you might know, most jaguars are covered in beautiful spots. However, there are a small percent (6%) that are all black (but sometimes they may still have visible spots) and are known as black panthers.