Full Breakdown
New Bolivian Tiger Cat Species Identified After a Century-Long Gap
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Discovery and Core Findings
On September 17, a research team announced the formal description of a previously unknown wild cat from Bolivia’s cloud-shrouded Yungas forest. The animal, called “Tilcayo” by local communities, has been assigned the scientific name *Leopardus tilcayo*. Genetic analysis of 38 sampled cats revealed that the Tilcayo lineage diverged from other tiger cats roughly 1.4 million years ago, a separation that meets the conventional DNA threshold for species-level distinction. The study also identified a new subspecies in Peru’s Yungas, *Leopardus tigrinus antisuyo*.
Scientific Context and Genetic Evidence
Tiger cats (*Leopardus* spp.) have long been regarded as a single species, but earlier DNA work hinted at hidden diversity. Evolutionary biologist Jonas Lescroart, co-lead author, explained that the greater the DNA differences, the longer the estimated period of physical separation, supporting the recognition of five distinct lineages. The researchers examined two live individuals and a limited set of camera-trap records, acknowledging that knowledge of the species remains preliminary.
Physical Description and Habitat
The Tilcayo measures about 18 inches (46 cm) in length and weighs roughly 3 lb (1.4 kg), making it smaller than the average domestic cat. Its fur is light brown with irregularly shaped rosettes across the body. Scat analysis indicates a diet that includes small rodents, while camera traps suggest nocturnal activity. One of the live specimens, a 10-year-old male, now resides at the Senda Verde Wildlife Sanctuary after being rescued from a local home.
Conservation Implications
The International Union for Conservation of Nature (IUCN) currently lists tiger cats as two “vulnerable” species. Researchers have shared their findings with the IUCN, whose upcoming review will assess each of the five lineages separately, potentially reclassifying the Tilcayo as endangered. The Yungas ecosystem faces mounting threats from deforestation, agricultural expansion, human-caused fires, and mining, heightening the urgency of habitat protection and forest restoration.
Verbatim Quotes
- “Its fur is light brown ... with irregularly shaped rosettes across its body,” — Paola Nogales-Ascarrunz
- “Our information at this moment is limited to the two live individuals that we examined, and a small number of camera-trap records.” — Jonas Lescroart, study co-lead author
- “We never expected this ?Bolivian tiger cat to be a separate species, and no one had ever proposed it as a different animal, subspecies or otherwise,” — Jonas Lescroart, study co-lead author
- “The more differences in their DNA, the longer the time that we estimate those lineages to have been physically separated,” — Jonas Lescroart, study co-lead author
- “Showing the general public that even in a flagship group such as cats ... there are still new species to be discovered may transmit an important message,” — Eduardo Eizirik