The Lontra longicaudis, known as the Otter is vulnerable,nationally threatened. This mammal has a total length of 1.5cm and a weight of 14kg., it has a round head with small ears and long whiskers on the snout. of short limbs, powerful claws and dense double fur.

The Otter has been observed in the Ranchería River basin, Serranía del Perijá and Montes de Oca. It usually lives in rivers, streams, lakes and bogs; digging their burrows on the shores, very close to the water.

Their diet is mainly based on fish., crabs and other crustaceans, litters consist of 3 the 4 pups, who are unduly threatened by the value of their skin, considered one of the finest.