The Olm (Proteus anguinus) is the largest cave-dwelling animal in the world, reaching up to 40 cm in length. It lives in Dinaric Karst and is most prominent in the subterranean world of Slovenia. It can live to be a 100 years old and can starve for decades. It has human-like skin (hence the Slovenian name "human fish" - človeška ribica), and it has often been referred to as a baby dragon. Living in total darkness, it has no eyes, but is very sensitive. It is an extremely elusive creature, hypersensitive to light, noise, vibrations etc. It's seen here in its natural habitat of Planina Cave near the village of Planina. The olm is a predator and eats small cave animals like the ones seen in this picture.