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Welcome to The Otter Wiki

The Otter Wiki is your resource for learning about the world's 13 otter species. All otters belong to the family Mustelidae, and range from the smallest (Asian Small-Clawed Otter) to the largest (Giant Otter).

All 13 Otter Species

SpeciesStatusDistributionNotable Trait
Sea OtterEndangeredNorth Pacific coastDensest fur of any mammal
Giant OtterEndangeredAmazon & Orinoco basinsLargest otter species
Asian Small-Clawed OtterVulnerableSouth & Southeast AsiaSmallest otter species
North American River OtterLeast ConcernCanada, USA, MexicoIconic American freshwater otter
Eurasian OtterNear ThreatenedEurope, Asia, North AfricaMost widely distributed
African Clawless OtterNear ThreatenedSub-Saharan AfricaNearly clawless paws
Congo Clawless OtterNear ThreatenedCentral AfricaWhite/cream facial patterning
Hairy-Nosed OtterEndangeredSoutheast AsiaUnique hair-covered nose
Smooth-Coated OtterVulnerableSouth & Southeast AsiaSleek, smooth fur
Spotted-Necked OtterLeast ConcernSub-Saharan AfricaDistinctive spotted throat
Marine OtterEndangeredPeru & Chile coastsOne of two marine species
Neotropical OtterNear ThreatenedMexico to ArgentinaVery adaptable
Southern River OtterEndangeredPatagoniaTemperate rainforest specialist

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The Otter Wiki is a community project. Visit our GitHub repository to contribute.