Tigrino the cat arrived at Senda Verde Wildlife Sanctuary in Bolivia as a mystery — a tiny, spotted feline no one could quite identify. Rescued as a kitten by a local family who thought he was a stray house cat, Tigrino soon revealed his wild side by sneaking out to stalk chickens. Weighing just 1.4 kilograms — lighter than a bag of sugar — he looked like a tiger cat, but something was off. That curious little cat turned out to be the first new living cat species discovered in over a century: the tilcayo (Leopardus tilcayo), a graceful wild cat with rounded ears, a slender body, and bold spots, native to Bolivia’s misty Yungas cloud forests.
For more than 100 years, scientists had not added a new living cat species to the world’s records. The last was the Uruguayan pampas cat in 1923. Meanwhile, small spotted cats across South America were all grouped under one name: Leopardus tigrinus. But genetic clues had long suggested this group was hiding more diversity. The breakthrough came when researchers, led by National Geographic Explorer Paola Nogales-Ascarrunz of Bolivia’s Universidad Mayor de San Andrés, studied DNA from Tigrino and a single hair sample from another rescued tilcayo returned to the wild. The results were astonishing: this was not just a subspecies, but a completely distinct cat that had split from its closest relatives 1.4 million years ago — twice as long ago as humans diverged from Neanderthals.
The discovery, published in Current Biology on September 17, marks a rare moment in modern zoology. Most new species today are reclassifications, but the tilcayo had never been formally described — despite local people already knowing it by name. Nogales-Ascarrunz chose to honor that knowledge by naming the species Leopardus tilcayo, after the name used by communities in the region. "I have the honor of naming a cat, and that’s a really big thing," she said. The tilcayo’s identification reshapes our understanding of wild cats in South America, confirming at least four distinct species where scientists once thought there was only one.
This discovery isn’t just about taxonomy — it’s about conservation. With its home in the fragile Yungas cloud forests, a habitat under pressure from deforestation and climate change, the tilcayo now enters the scientific record at a critical time. Knowing it exists is the first step toward protecting it. And it’s a powerful reminder that even in the 21st century, with all our technology, there are still wild wonders waiting to be recognized — often, as in this case, with a little help from a chicken-stalking house pet.