This document discusses the Eurasian otter (Lutra lutra), providing details about its external morphology, scientific classification, distribution and subspecies. It is described as a large otter with dark brown coat and light grey underbelly, well adapted for an aquatic lifestyle. The document outlines that it is found across Europe and Asia, and lists its conservation status as Near Threatened by IUCN and protected under Schedule II of the Indian Wildlife Protection Act. Distribution in India includes the Himalayas, eastern and southern regions, with best sightings at Corbett National Park.