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New Tiger Cat Species *Leopardus tilcayo* Discovered in Bolivia’s Yungas Cloud Forest
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Discovery and Taxonomic Confirmation
Scientists formally described *Leopardus tilcayo*—the first new living feline species identified in more than a century—in a paper published online on September 17, 2026, in *Current Biology*. The species was recognized after a rescued kitten, nicknamed “Tigrino,” was brought to the Senda Verde Wildlife Sanctuary in Bolivia’s Yungas cloud forest around 2017. Whole-genome sequencing revealed a distinct genetic signature that did not match any known *Leopardus* specimens, prompting the authors to name a new species and a new subspecies from Peru.
Genetic Analysis and Evolutionary History
The team analyzed complete genomes from 38 *Leopardus* individuals, including eight museum specimens, to resolve taxonomic ambiguity within the tiger-cat complex. Phylogenomic results placed *L. tilcayo* as a separate lineage that diverged from its closest relatives about 1.4 million years ago, during the Early Pleistocene, when climatic shifts likely fragmented montane forests and isolated populations.
Physical Description and Known Individuals
*Leopardus tilcayo* is a small spotted felid measuring 42.5–50.5 cm (17–20 in) in head-body length, with a 25–26.5 cm (10 in) tail, and weighing about 1.4 kg (3 lb). Its pelage is light-brown with large, irregular dark rosettes. Only one male, now ten years old, remains in captivity at La Senda Verde Animal Refuge; a second individual, a female, was released after brief captivity. Both were sedated for measurement, photography, and DNA sampling.
Conservation Implications
The discovery reshapes conservation priorities for South-American tiger cats. Splitting the former single species into five distinct taxa means each lineage, including *L. tilcayo*, may require separate IUCN assessments. Primary threats are habitat loss from deforestation and wildfires, hunting pressure, and disease transmission from domestic animals. Climate-change projections suggest further reduction of suitable cloud-forest habitat, potentially worsening declines that genetic data already indicate in some lineages.
Official Statements & Responses
Paola Nogales-Ascarrunz, a National Geographic Explorer and co-author, emphasized that the finding highlights “how much biodiversity remains unknown” and called for intensified field surveys to locate additional individuals. She noted that media attention could boost conservation funding for the Yungas ecosystem. Researchers from the University of Oxford and National Museums, Scotland, echoed that accurate species delimitation is essential for targeted conservation actions.
Conflicting Reports & Gaps
Current knowledge of *L. tilcayo*’s ecology is limited. Researchers infer a diet of small rodents, but direct observations are lacking. Population size, distribution beyond the sanctuary, and reproductive behavior remain unquantified. No formal IUCN Red List assessment has been completed, leaving the species’ official threat category undefined.
What’s Next
The team plans extensive camera-trap surveys across the Bolivian Yungas to map the species’ range and identify potential subpopulations. Additional genetic sampling will assess connectivity between groups and inform a species-specific IUCN evaluation. Conservation groups aim to integrate the new taxon into existing forest-protection initiatives, emphasizing habitat preservation and community engagement to mitigate hunting and disease transmission.