Paola Nogales-AscarrunzSenda VerdeNational GeographicCurrent Biology

Scientists identify Tilcayo tiger cat in Bolivia, first new wild cat species in over a century; study in Current Biology reveals it diverged 1.4 million years ago

Scientists have identified the Tilcayo tiger cat, a new wild cat species in Bolivia, marking the first discovery of its kind in over a century. The species, named Leopardus tilcayo, diverged from related tiger cats approximately 1.4 million years ago, according to a study published in Current Biology.

CBS News CBS News+1 source18 September 2026 · 17:34 UTC
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Scientists have formally identified a new wild cat species native to Bolivia, the Tilcayo tiger cat, marking the first description of a completely new feline species in over a century.345

The species, scientifically named Leopardus tilcayo, was discovered in the mountainous Yungas region near La Paz.61213

Paola Nogales-Ascarrunz, a biologist and National Geographic explorer, noted that locals initially mistook the small feline for an ordinary house cat. The tilcayo measures about 18 inches in length and weighs roughly 3 pounds, making it smaller than an average domestic cat.78910

The cat has a spotted, leopard-like coat and rounded ears, with large, irregular rosette-shaped markings.

The discovery is significant as it does not involve reclassifying a known subspecies; instead, it identifies a cat that had never received its own scientific designation.

The tilcayo diverged from related tiger cats approximately 1.4 million years ago, according to genomic analysis.

Currently, only a pair of tilcayos have been identified, with one male residing in an animal shelter after being rescued, while a female was released into the wild.

The species is classified as vulnerable to extinction, with its population size and ecological details still largely unknown.

Researchers are installing camera traps in the Yungas to monitor the species, as habitat threats from deforestation, agricultural expansion, and mining loom large.

Key Insight
“The tilcayo, measuring about 18 inches and weighing 3 pounds, is smaller than a domestic cat and has been classified as vulnerable to extinction. Researchers compared genomes from 38 Leopardus members, finding the species diverged 1.4 million years ago and is only found in Bolivia.”
Researchers identify new species of wild cat
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Researchers identify new species of wild cat
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CBS NewsCBS News
“Scientists have discovered a new species of wild cat for the first time in more than a century, a Bolivian researcher told AFP on Thursday.”
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YahooYahoo
“Scientists have formally identified a new wild cat species native to Bolivia, marking the first description of a completely new living feline species in more than a century, according to a genomic study.”
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