The jaguar, Panthera onca, is a big cat, a feline in the Panthera genus. It is the only Panthera found in the Americas. The jaguar is the third-largest feline after the tiger and the lion, and the largest and most powerful feline in the Western Hemisphere. The jaguar's present range extends from Mexico across much of Central America and south to Paraguay and northern Argentina. Apart from a known and possibly breeding population in Arizona (southwest of Tucson), the cat has largely been extirpated from the United States since the early 1900s. There is, however, a high probability that (given the surveyed population in southwestern Arizona) populations of Jaguar exist in other unsurveyed regions within southern Arizona, New Mexico and possibly even Texas.