Jaguar

• 1. Introduction

  ›

  The jaguar, Panthera onca, kills with a bite that drives straight through the skull between the ears and into the brain. Few big cats hunt this way, and the habit says a lot about an animal built for ambush in the forests, swamps and flooded grasslands of the Americas.

  This documentary follows the jaguar from its murky family tree to its uncertain future. Where did a cat of this size come from, and why do scientists keep revising how many kinds of jaguar exist? What lets it hunt turtles, fish and capybaras with equal ease? Why did it vanish from places like California, and what does it take to bring a wide-ranging predator back from the edge? And why did civilizations from the Andes to Mexico choose this cat as a symbol of power?

  21134

• 2. Names and Ancestors

  ›

  The word jaguar probably descends from yaguara, a Tupi-Guarani term for a wild beast that overcomes its prey at a bound. Because the plain word is also used for other animals, indigenous peoples in Guyana say jaguareté, adding a suffix that means true beast. The species name onca comes from onça, the Portuguese name for a spotted cat larger than a lynx. Even the pronunciation splits by region. North Americans say it with two syllables, while British English uses three.

  In 1758, Carl Linnaeus described the animal in his work Systema Naturae and named it Felis onca. Later, Reginald Innes Pocock placed it in the genus Panthera, noting features it shares with the leopard. Today it is the only living Panthera species native to the Americas. Whether its closest kin is the lion or the leopard is still debated, because different genetic analyses give different answers.

  Pocock also shaped the jaguar's subspecies story. In 1939 he recognized eight, working from skulls and skins collected in different places, though he himself doubted several. By 2005 nine subspecies were considered valid, each named from a single type specimen. One came from a skull found in Peru, another from a skin collected near Cibecue, Arizona, and another from a fossil jaguar jaw dug up in the Sierras Pampeanas of Argentina.

  Then the genetics intervened. Morphological and genetic research found a gradual north-south change across populations but no clear dividing lines. A DNA analysis of 84 samples from South America showed that jaguars in Colombia once mixed freely. Since 2017 the living jaguar has been treated as a single, monotypic taxon. Two fossil subspecies, Panthera onca augusta and Panthera onca mesembrina, are still recognized, although a 2024 study called their validity unresolved.

  The deeper ancestry runs through Africa. The jaguar's lineage appears to have begun there, then reached Eurasia 1.95-1.77 million years ago. Many researchers propose that the living jaguar descends from Panthera gombaszogensis, a Eurasian cat, though some authors dispute that close link. Its ancestors probably entered the Americas in the Early Pleistocene, crossing Beringia, the land bridge that once spanned the Bering Strait.

  The oldest fossils of the modern jaguar, found in North America, are 850,000-820,000 years old. Yet mitochondrial DNA from 37 jaguars tells a different story for living populations. It suggests they evolved between 510,000 and 280,000 years ago in northern South America. They then recolonized North and Central America after jaguars there died out in the Late Pleistocene. One fossil from Oregon Caves National Monument and Preserve is about 38,600 years old, the oldest jaguar fossil from the Rancholabrean age.

  910202122

• 3. Coat and Jaws

  ›

  Exceptionally big males have been recorded at 158 kg, but most jaguars weigh between 56 and 96 kg. That makes the jaguar the largest cat native to the Americas and the third largest in the world, after the tiger and the lion. Its body runs from 1.12 to 1.85 m from nose to the base of the tail. It stands only 57 to 81 cm at the shoulder.

  Compactness is the point of the design. The legs are muscular and shorter than those of other Panthera species of similar weight. The tail, at 45 to 75 cm, is the shortest of any big cat. Females are typically 10-20% smaller than males, and the smallest females from Middle America weigh about 36 kg.

  Size also follows geography, tending to grow from north to south. Jaguars in the Chamela-Cuixmala Biosphere Reserve on the Pacific coast of central Mexico weigh around 50 kg. In Venezuela and Brazil, males average about 95 kg, while females average 56-78 kg. Forest jaguars are often darker and considerably smaller than those of open country, possibly because forests hold fewer large herbivores.

  The coat runs from pale yellow through tan to reddish-yellow, with a whitish underside. Black spots cover it, and on the flanks they open into rosettes that may contain one or several dots. Spots on the head, neck and tail are solid, and near the tail's end they merge into bands and a black tip. Along the back they stretch out and often join into a stripe. On the belly they turn blotchy. All of this breaks up the animal's outline in dense vegetation and patchy shadow.

  People often confuse the jaguar with the leopard. The jaguar is sturdier, with stockier limbs and a squarer head. Its rosettes are larger, darker and fewer, with thicker lines and a small spot in the middle.

  The jaws are the real signature. A jaguar has the third-highest bite force among cats, behind only the tiger and the lion. At the tip of the canine tooth the average is 887.0 newtons, giving a bite force quotient of 118.6. A 100 kg jaguar can bite with 4.939 kilonewtons at the canines and 6.922 kilonewtons at the carnassial notch, the shearing teeth farther back.

  Some jaguars are black. These melanistic animals are called black panthers, and the black form is less common than the spotted one. Melanism in jaguars comes from deletions in the melanocortin 1 receptor gene and is inherited through a dominant allele. Black jaguars reach higher densities in tropical rainforest and are more active in daytime. That pattern suggests the dark coat works as camouflage in deep shadow under bright light.

  In 2004, a camera trap in the Sierra Madre Occidental mountains photographed the first documented black jaguar in northern Mexico. Others have been photographed in Costa Rica, in Alberto Manuel Brenes Biological Reserve, in the Cordillera de Talamanca, in Barbilla National Park, and in eastern Panama.

  4445484911

• 4. Ambush Hunter

  ›

  In an analysis of 53 diet studies, the capybara and the giant anteater were the prey jaguars chose most often. Recorded prey ranges from 1 to 130 kg. When available, the jaguar also takes marsh deer, southern tamandua, collared peccary and black agouti. In floodplains it opportunistically hunts green anacondas, caimans and turtles. In the Brazilian Pantanal it feeds mostly on aquatic reptiles and fish, including thorny catfish, small-scaled pacu, red-bellied piranha and barred catfish. Where wild prey is scarce in cattle country, it also preys on livestock.

  The jaguar is an obligate carnivore, meaning it needs flesh for its nutrition. A captive jaguar weighing 34 kg was estimated to need 1.4 kg of meat a day.

  Its bite is strong enough to pierce the shells of the yellow-spotted Amazon river turtle and the yellow-footed tortoise. One hypothesis says its skull-piercing habit evolved for cracking turtle shells, when armored reptiles may have been abundant after the late Pleistocene extinctions. The idea is disputed. Even where reptiles are plentiful, jaguars take mammals more often.

  Rather than chase, the jaguar walks slowly down forest paths, listening and stalking before it rushes or ambushes. It strikes from cover, usually from the target's blind spot, with a quick pounce. Indigenous people and field researchers alike consider its ambush skill nearly peerless in the animal kingdom. The attack may include a leap into water. A jaguar can swim while carrying a large kill, and it is strong enough to haul a carcass as big as a heifer up a tree to escape rising floods.

  After a kill, it drags the carcass into a thicket or other secluded spot. It starts eating at the neck and chest, then takes the heart and lungs, then the shoulders. Ten jaguars monitored in the southern Pantanal from October 2001 to April 2004 killed at intervals of one to seven days in the dry season, April to September. In the wet season, October to March, the intervals stretched from one to 16 days.

  Jaguars are mostly active at night and at twilight, matching their prey. In the Amazon rainforest and the Pantanal, though, forest jaguars are largely active by day, while Atlantic Forest jaguars favor the night. They swim well, play and hunt in the water, and have been recorded crossing at least 1.3 km between islands and the shore. They climb trees too, but less often than cougars.

  As an apex predator, the adult jaguar is not preyed on in the wild. It has been called a keystone species, on the assumption that it holds down populations of herbivores and seed-eating mammals and so protects forest structure. Field work suggests some of those population swings may be natural variability, so not all scientists accept the keystone idea.

  The jaguar shares much of its range with the cougar. In central Mexico, white-tailed deer make up 54% of the jaguar's prey and 66% of the cougar's. In South America, the jaguar usually takes prey over 22 kg, while the cougar takes animals between 2 and 22 kg. That broader menu may give the cougar an edge in landscapes altered by people.

  3477857073

• 5. Family and Territory

  ›

  In 1977, researchers in the Paraguay River valley repeatedly sighted jaguars in groups, including a male, a female and cubs, and also two females with two males. That was unusual, because jaguars are generally solitary except for mothers with cubs. In the Venezuelan Llanos and the Brazilian Pantanal, researchers have even detected male coalitions that marked, defended and invaded territories together. Those males also hunted together and mated with several females.

  Territory is marked with scrapes, urine and feces, and its size depends on the level of deforestation and human population density. Female home ranges are 15.3 km2 in the Pantanal, 53.6 km2 in the Amazon and 233.5 km2 in the Atlantic Forest. Males need more room: 25 km2 in the Pantanal, 180.3 km2 in the Amazon, 591.4 km2 in the Atlantic Forest and 807.4 km2 in the Cerrado.

  GPS telemetry studies in 2003 and 2004 changed the headcount in the Pantanal. They found only six to seven jaguars per 100 km, against 10 to 11 using traditional methods. That suggests the widely used sampling methods may inflate numbers. Fights between males are rare, and avoidance has been observed. In one wetland population with degraded territorial boundaries, same-sex adults tolerated each other more and sometimes interacted in friendly, co-operative ways.

  Jaguars also talk. A roar or grunt carries over long distances, and wild jaguars have been seen trading intense bouts of counter-calling. The call is described as hoarse, with five or six guttural notes. A softer sound called prusten, a low snort, is used in greetings, courtship display and by mothers comforting cubs, and it may signal tranquility. Adults growl during courtship and mating. Cubs bleat, gurgle and meow, and mothers meow back to stay in contact.

  In captivity, females reach sexual maturity at about 2.5 years, and males at three to four years. Gestation lasts 91 to 111 days. Females typically have one to two cubs, born with closed eyes that open after two weeks. Cubs are weaned at three months but stay in the birth den for six months before they follow their mother on hunts. They remain with her for up to two years. Wild jaguars appear to rarely live beyond 11 years, but captive individuals may reach 22.

  Fatherhood is not always safe for cubs. In 2001, a male killed and partly ate two cubs in Emas National Park, and DNA paternity testing of blood samples showed he was their father. Two more cases of infanticide were documented in the northern Pantanal in 2013. To defend against it, a female hides her cubs and distracts the male with courtship behavior.

  8889919295

• 6. A Shrinking Range

  ›

  In 1999, the jaguar's range at the turn of the 20th century was estimated at 19 million square kilometres. By the turn of the 21st century it had fallen to about 8.75 million, with most losses in the southern United States, northern Mexico, northern Brazil and southern Argentina. A 2002 estimate put the range at 46% of its early 20th-century extent. A 2018 estimate said it had declined by 55% over the last century. The jaguar is locally extinct in El Salvador and Uruguay, and the Amazon rainforest is its only remaining stronghold.

  The cat prefers dense forest, riverside habitat and swamps with thick cover. It has been recorded at elevations up to 3800 m but avoids montane forests. In the Mayan forests of Mexico and Guatemala, 11 GPS-collared jaguars favored undisturbed habitat away from roads. Females avoided even low levels of human activity, while males seemed less bothered.

  The retreat from the north is well documented. In the 19th century, jaguars were still sighted near the North Platte River in Colorado and in coastal Louisiana. Verified reports from California include two from as far north as Monterey, in 1814 and 1826. The only known active den in the United States, with breeding adults and kittens, was in the Tehachapi Mountains of California before 1860. The last confirmed jaguar in Texas was shot in 1948 near Kingsville.

  In Arizona, a female was shot in the White Mountains in 1963. Hunting was outlawed in 1969, but by then no females remained, and only two males were sighted and killed over the next 25 years. Then, in 1996, a rancher and hunting guide from Douglas, Arizona, met a jaguar in the Peloncillo Mountains. He became a jaguar researcher, and his trail cameras recorded four more. Between 2012 and 2015, a wandering male was recorded at 23 locations in the Santa Rita Mountains. Eight jaguars were photographed in the southwestern United States between 1996 and 2024.

  The cat has been listed as Near Threatened on the IUCN Red List since 2002, as the population probably fell by 20-25% since the mid-1990s. Habitat loss, fragmentation, poaching and retaliation for livestock losses all play a part. In Panama, 220 of 230 jaguars were killed in retaliation for attacks on livestock between 1998 and 2014. In the Alto Paraná Atlantic forests, at least 117 were killed in Iguaçu National Park and neighboring Misiones Province between 1995 and 2008.

  Trade is another pressure. The skin trade boomed from the end of the Second World War into the early 1970s, and in the 1960s more than 15,000 jaguars a year were killed for skins in the Brazilian Amazon alone. The trade fell after the Convention on International Trade in Endangered Species took effect in 1973. It never fully ended. Seizure reports show at least 857 jaguars in trade between 2012 and 2018, including 482 in Bolivia. Between 2014 and early 2019, 760 jaguar fangs originating in Bolivia and bound for China were seized.

  259625855

• 7. Protecting the Corridors

  ›

  In 1986, Belize established the Cockscomb Basin Wildlife Sanctuary, the world's first protected area for jaguar conservation. Since then, the jaguar has been placed on CITES Appendix I, which prohibits all international commercial trade in the animal and its body parts. Hunting is prohibited in many range countries, including Argentina, Brazil, Colombia, Panama, Paraguay, Venezuela and the United States, and restricted in Guatemala and Peru.

  In 1999, field scientists from 18 range countries mapped the most important places for long-term survival, judging each by its jaguar population, prey base and habitat quality. These areas, called Jaguar Conservation Units, must hold at least 50 breeding individuals. They range from 566 to 67598 km2, and 51 were designated across 36 geographic regions. Examples include the Selva Maya forests spanning Mexico, Belize and Guatemala, the Venezuelan Llanos, and Misiones Province in Argentina.

  Isolated reserves are not enough, so in 2010 researchers identified optimal travel routes between the core populations. These corridors follow the shortest distances, demand the least energy from dispersing animals and carry low mortality risk. They cover 2.6 million square kilometres. In Mexico and Central America they run from 3 to 1102 km in length, and in South America from 489.14 to 1607 km. Seven of Mexico's 13 corridors are working well, at least 14.25 km wide and no longer than 320 km. Deforestation has already cut links. By 2014, direct connections between two units in Bolivia were lost, and two units in northern Argentina became completely isolated.

  In August 2012, the United States Fish and Wildlife Service set aside 838232 acres in Arizona and New Mexico for the jaguar. The Jaguar Recovery Plan followed in April 2019, treating Interstate 10 as the northern boundary of the recovery unit. In Mexico, a national conservation strategy was developed from 2005 and published in 2016. The country's jaguar population rose from an estimated 4,000 in 2010 to about 4,800 in 2018. Conservationists in Mexico and the United States also established the 56,000 acre Northern Jaguar Reserve in northern Mexico.

  Reserves must look beyond their own fences, since jaguars are unlikely to stay inside them, especially as numbers grow. Local attitudes and anti-poaching laws matter as much as boundaries. Scientists track jaguars with camera traps and telemetry, and detection dogs find feces that reveal health and diet. Much current work focuses on educating ranch owners and promoting ecotourism.

  Protecting jaguars protects many other species, which is why the jaguar is called an umbrella species. An evaluation of the units from Mexico to Argentina found overlap with high-quality habitat for about 1,500 mammals. In Central America they overlap the habitat of 187 of 304 regional endemic amphibian and reptile species. Nineteen of those amphibians occur only within the jaguar's range.

  547172572

• 8. Fear and Reverence

  ›

  The Spanish conquistadors feared the jaguar. Charles Darwin recorded that indigenous peoples of South America said there was no need to fear it as long as capybaras were abundant. Attacks on people are rare. The first official record of a jaguar killing a human in Brazil dates to June 2008, and two children were attacked by jaguars in Guyana. Most known attacks happened when the animal was cornered or wounded.

  In the Andes, a jaguar cult spread by the early Chavín culture was accepted over most of today's Peru by 900 BC. The later Moche culture of northern Peru used the jaguar as a symbol of power in many ceramics. In the Muisca religion of the Altiplano Cundiboyacense, the jaguar was sacred, and people wore jaguar skins during rituals. Those skins were also traded to peoples in the nearby Orinoquía Region. The name of the Muisca ruler Nemequene came from Chibcha words meaning force of the jaguar.

  In Veracruz and Tabasco, archaeologists have found Olmec sculptures with the so-called were-jaguar motif, showing stylized jaguars with half-human faces. Later, the Maya called the cat balam or bolom in many Mayan languages. They used it to symbolize warriors and the elite, valuing it as brave, fierce and strong. They also linked it to the underworld, and its image decorated tombs and the vessels buried with the dead.

  The Aztecs called the jaguar ocelotl and considered it king of the animals, fierce and courageous but also wise, dignified and careful. Their military had two classes of warriors, the ocelotl or jaguar warriors and the cuauhtli or eagle warriors, and each dressed like its animal. Members of the royal class also decorated themselves with jaguar skins. The jaguar was the totem animal of the powerful deities Tezcatlipoca and Tepeyollotl.

  The image reached farther north too. A conch shell gorget depicting a jaguar was found in a burial mound in Benton County, Missouri. In the Southwest, rock drawings by the Hopi, Anasazi and Pueblo peoples show a clearly spotted cat. It is presumed to be a jaguar because it is drawn much larger than an ocelot.

  5661