Scientists Discover a New Wild Cat Species Hidden in Bolivia's Forests

For years, a small spotted cat living in a wildlife sanctuary in Bolivia looked like an ordinary member of a group of South American wildcats known as tiger cats.

But when scientists examined its DNA, they uncovered something extraordinary. The animal belonged to an entirely new species of wild cat — one that had escaped scientific recognition despite living in forests where people had encountered similar animals for generations.

Named Leopardus tilcayo, the species was formally described in September 2026. It represents the first new living cat species described by scientists in more than a century. And remarkably, the discovery began with a single rescued animal.

The Unusual Cat That Caught a Scientist's Attention

The story began in Bolivia's Yungas region, an area of mountainous forests along the eastern slopes of the Andes.

A local resident had found a small feline in the forest and initially mistaken it for a domestic kitten. As the animal grew, however, its behavior made it clear that it was not an ordinary house cat.

The cat eventually arrived at the La Senda Verde wildlife sanctuary, where it became known as Tigrino. Bolivian researcher Paola Nogales-Ascarrunz was volunteering at the sanctuary when she noticed something unusual about the animal. Its spotted coat and physical appearance resembled those of other tiger cats, yet some of its features seemed different.

Tiger cats are small wild felines distributed across Central and South America. Their similar markings have made identifying individual species notoriously difficult. Researchers suspected that animals previously classified together might actually represent several distinct evolutionary lineages.

Tigrino offered an opportunity to investigate that possibility.

DNA Revealed a Species Scientists Had Never Recognized

An international research team examined the genomes of 38 wild cats from the genus Leopardus, including DNA recovered from historical museum specimens. The results were published in the scientific journal Current Biology.

Instead of confirming the existing understanding of tiger cat diversity, the genetic analysis revealed five distinct species within the group. One of them was the previously unrecognized Bolivian cat, now officially named Leopardus tilcayo.

The researchers also described a new subspecies from Peru, Leopardus tigrinus antisuyo. Genetic evidence suggests the Bolivian species separated from its closest relatives approximately 1.4 million years ago. That means its evolutionary history had been unfolding independently for an extraordinarily long time, even though scientists had not recognized it as a separate species.

The study demonstrates how DNA analysis can reveal biological differences that are difficult to detect through appearance alone. Two animals may look almost identical while belonging to separate branches of the evolutionary family tree.

A Wild Cat Not Much Bigger Than a House Cat

Unlike lions, tigers and leopards, the newly identified species is remarkably small. Tigrino has a slender body, a light brown coat covered in dark markings and a long, ringed tail.

Its body measures roughly 45 centimeters, excluding the tail, and its weight has been reported at approximately 1.4 kilograms. That makes it smaller than many adult domestic cats. For comparison, some large domestic breeds, including Maine Coons, can weigh several times as much. We explored those differences in our article about why some domestic cats grow so big.

Despite its familiar appearance, however, Leopardus tilcayo is a wild animal, not a domesticated breed.

Both wild and domestic cats belong to the family Felidae, but they have followed different evolutionary paths. Tigrino's discovery also raises an intriguing question: how many other small wild cats remain unidentified because they resemble species scientists already know?

Could the New Species Already Be Threatened?

For conservation researchers, discovering a new species is only the beginning.

Scientists still know remarkably little about Leopardus tilcayo.

Tigrino is the only living individual that has been conclusively documented and studied as a representative of the newly described species. That does not mean it is the last surviving animal.

Researchers believe others inhabit Bolivia's Yungas forests, but their population size and exact distribution remain uncertain.

Those forests face growing pressure from agricultural expansion, deforestation, fires and other human activities. Habitat destruction is particularly concerning for little-studied animals because their populations may decline before scientists have established how many exist. Recognizing Leopardus tilcayo as a distinct species gives conservationists a clearer target for future surveys and protection efforts. It also means the animal's conservation status will need to be evaluated separately rather than assumed from assessments of other tiger cats.

What This Discovery Reveals About the Cat Family

The discovery challenges the assumption that scientists have already identified all the world's living cat species. Large cats attract enormous public attention, but their smaller relatives can be much harder to study. Some inhabit dense forests, avoid humans and leave behind few specimens for researchers to examine.

The Bolivian discovery shows why museum collections, genetic technology and observations by local communities remain essential to understanding biodiversity. It also reveals how an animal can remain scientifically overlooked without being entirely unknown to the people who share its environment.

For years, Tigrino lived as an unusual rescued wild cat. Today, the same animal represents a previously unrecognized branch of feline evolution.

And somewhere in Bolivia's mountain forests, other members of this newly identified species may still be moving through the trees, largely unseen by science.

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