Hairy-nosed Otter : Characteristics
Lutra sumatrana is the hairy-nosed otter, possibly the rarest species in the world. Local names include Berang-berang berkumis (moustachioed otter) and Babi air (water pig!).
The hairy-nose is very similar in shape and size to the Eurasian otter, Lutra lutra. Three to four feet long, with strong claws on fully webbed feet. Dark chestnut brown on top with a small pale patch on its throat.
Of course, the nose of the hairy-nosed otter is, well, hairy! The rhinarium is shaped like an upside-down trapezoid with large dips on each side, and is covered in hairs. Since getting close enough to an otter to see a hairy nose is rather tricky, these otters are hard to identify in the wild.