Lutrinae
- Aonyx
- Enhydra
- Hydrictis
- Lontra
- Lutra
- Lutrogale
- Pteronura
- Enhydriodon
- Sivaonyx
- Eurasian otter Lutra lutra
An otter of waterways in Eurasia and northern Africa. It catches fish and other prey in water and rests in sheltered places on land.
- Sea otter Enhydra lutris
A member of the weasel family with dense fur, living along North Pacific coasts.
- North American river otter Lontra canadensis
A North American otter that uses both land and water and shelters in burrows near riverbanks.
- Neotropical River Otter Lontra longicaudis
An otter of South America and Trinidad, using rivers, lakes and their banks.
- Marine Otter Lontra felina
The marine otter lives among rocky shores along the Pacific coast of South America. It has dark brown fur and feeds on fish, crustaceans, and mollusks.
- Southern River Otter Lontra provocax
A South American otter found in southern Chile and parts of Argentina.
- Spotted-necked Otter Hydrictis maculicollis
A slender otter of African lakes and large rivers that catches fish in the water.
- Hairy-nosed Otter Lutra sumatrana
The hairy-nosed otter has short fur across the nose pad. Records come from wetlands and shallow coastal waters in Southeast Asia, and fish are a common food.
- African clawless otter Aonyx capensis
An African otter that searches for crabs and handles prey with its clawless forepaws.
- Congo Clawless Otter Aonyx congicus
This otter has silver-tipped head and shoulder fur and a white-bordered dark facial patch. Reports document it in Congo Basin rainforest and waterways, with uncertain range edges and identification near related otters.
- Asian small-clawed otter Aonyx cinereus
A small otter of South and Southeast Asian wetlands. It probes mud and beneath rocks with its forepaws to find crabs and shellfish.
- Smooth-coated Otter Lutrogale perspicillata
The Smooth-coated Otter ranges across South and Southeast Asia. It has short, smooth brown fur and uses waterside habitats such as rivers, wetlands, and mangroves.
