High in the cloud forests of Bolivia's Andes, scientists have named a new species of wild cat—the tilcayo—marking the first feline discovery of its kind in over a century. Smaller than a house cat and shaped by the mist-laden demands of high-altitude life, this animal has existed beyond the reach of scientific knowledge while the world looked elsewhere. Its emergence into the catalogue of known life is both a quiet triumph of patient fieldwork and a sobering reminder that the boundaries of human understanding remain far narrower than we tend to assume.