World’s smallest otter found in Nepal after nearly two centuries

Stories of animals once thought extinct and reappearing after centuries give moments of hope and remind us that nature can be incredibly resilient, even in the face of relentless challenges like deforestation, pollution, and climate change. Many species go “missing” not because they’re gone, but because their habitats become inaccessible, their populations reduce significantly, or they're simply overlooked.

However, when a species is rediscovered, it reignites our connection to the wild and also becomes a wake-up call for the conservation of threatened species. One such example has just been discovered in Nepal, where scientists have confirmed the presence of the Asian small-clawed otter for the first time in over 185 years. Once thought to be extinct in the region, this elusive animal is now making a comeback in its surroundings. Its rediscovery isn't just about one species, it's about ecosystems healing and the chance to do things differently before it's too late.

The Asian small-clawed otter hadn’t been officially seen in Nepal since 1839, but it has recently made a comeback and has been officially confirmed. While there were occasional unconfirmed sightings over the years, particularly in Makalu Barun National Park, none could verify the species’ existence. That changed in November when officials in Nepal’s Dadeldhura district found a juvenile otter in poor condition. They took it in, nursed it back to health, and later realised how significant it was, as it was the elusive small-clawed otter, alive and well in Nepal once more.

This otter isn’t just rare in Nepal, it’s the smallest otter species on the planet. Known scientifically as Aonyx cinereus, it’s typically found in parts of Southeast Asia, including India's Darjeeling region. The animal is distinguishable by its tiny claws, webbed feet, and friendly behaviour. Despite its small size, it is a huge indicator of ecosystem health. Researcher Mohan Bikram Shrestha, who has long studied otters and birds in Nepal, confirmed its existence after a long research.

The otter was found in Nepal’s western Dadeldhura district, but reports suggest its range may stretch across both the eastern Himalayas and western plains like Kailali and Kapilvastu. There have even been hints of sightings in eastern Nepal. This means the species may have quietly survived across a wider area than previously assumed. With nearby populations known in India’s Darjeeling, it's possible that river systems connect these groups. The rediscovery opens the door to more focused conservation and research in these regions.

This isn’t just about spotting a rare animal, it’s about the health of entire ecosystems. Nepal’s rivers have been under immense pressure from pollution, climate change, flooding, and landslides. According to Think Global Health, rivers have become dumping grounds for waste from industries, homes, and even hospitals. The presence of otters, which rely on clean, thriving river systems, is a promising sign that parts of these ecosystems are still intact. It’s a call to action, that by saving the rivers, we might save much more.