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The jaguar (// or UK //; Brazilian Portuguese: [ʒɐˈɡwaʁ], Spanish: [xaˈɣwar]), Panthera onca, is a big cat, a feline in the Pantheragenus, and is the only Panthera species found in the Americas. The jaguar is the third-largest feline after the tiger and the lion, and the largest in theWestern Hemisphere. The jaguar’s present range extends from Southwestern United States and Mexico across much of Central America and south toParaguay and northern Argentina. Apart from a known and possibly breeding population in Arizona (southeast of Tucson), the cat has largely beenextirpated from the United States since the early 20th century.
This spotted cat most closely resembles the leopard physically, although it is usually larger and of sturdier build and its behavioral and habitatcharacteristics are closer to those of the tiger. While dense rainforest is its preferred habitat, the jaguar will range across a variety of forested and open terrains. It is strongly associated with the presence of water and is notable, along with the tiger, as a feline that enjoys swimming. The jaguar is largely asolitary, opportunistic, stalk-and-ambush predator at the top of the food chain (an apex predator). It is a keystone species, playing an important role in stabilizing ecosystems and regulating the populations of the animals it hunts. The jaguar has an exceptionally powerful bite, even relative to the other big cats. This allows it to pierce the shells of armored reptiles and to employ an unusual killing method: it bites directly through the skull of prey between the ears to deliver a fatal bite to the brain.
The jaguar is a near threatened species and its numbers are declining. Threats include loss and fragmentation of habitat. While international trade in jaguars or their parts is prohibited, the cat is still frequently killed by humans, particularly in conflicts with ranchers and farmers in South America. Although reduced, its range remains large. Given its historical distribution, the jaguar has featured prominently in the mythology of numerousindigenous American cultures, including those of the Maya and Aztec.