Animalia > Chordata > Mammalia > Carnivora > Mustelidae > Lontra > Lontra canadensis

Lontra canadensis (northern river otter; North American River Otter; river otter)

Synonyms: Lutra canadensis; Mustela canadensis; Mustela lutra canadensis
Language: French; Spanish

Wikipedia Abstract

The North American river otter (Lontra canadensis), also known as the northern river otter or the common otter, is a semiaquatic mammal endemic to the North American continent found in and along its waterways and coasts. An adult river otter can weigh between 5.0 and 14 kg (11.0 and 30.9 lb). The river otter is protected and insulated by a thick, water-repellent coat of fur.
View Wikipedia Record: Lontra canadensis


Lontra canadensis brevipilosus
Lontra canadensis canadensis (North American river otter)
Lontra canadensis interior
Lontra canadensis kodiacensis (North American river otter)
Lontra canadensis lataxina (North American river otter)
Lontra canadensis laxatina
Lontra canadensis mira (North American river otter)
Lontra canadensis pacifica (North American river otter)
Lontra canadensis periclyzomae (North American river otter)
Lontra canadensis sonora (North American river otter)

EDGE Analysis

Uniqueness Scale: Similiar (0) 
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
 Unique & Vulnerable (100)
ED Score: 5.15
EDGE Score: 1.82


Gestation [2]  62 days
Litter Size [2]  3
Litters / Year [2]  1
Maximum Longevity [2]  27 years
Snout to Vent Length [4]  28 inches (72 cm)
Water Biome [1]  Lakes and Ponds, Rivers and Streams, Coastal
Weaning [2]  4 months 2 days
Adult Weight [2]  19.842 lbs (9.00 kg)
Birth Weight [2]  140 grams
Diet [3]  Carnivore (Vertebrates), Piscivore
Diet - Ectothermic [3]  10 %
Diet - Fish [3]  90 %
Forages - Ground [3]  100 %
Female Maturity [2]  2 years
Male Maturity [2]  2 years


Protected Areas

+ Click for partial list (100)Full list (117)


Biodiversity Hotspots

Name Location Endemic Species Website
California Floristic Province Mexico, United States No

Habitat Vegetation Classification

Name Location  Website 
Bald-cypress - Water Tupelo Floodplain Forest United States (Louisiana, Missouri, Illinois, Tennessee, Texas, Arkansas, Kentucky, Mississippi)
Bald-cypress Floodplain Forest United States (Missouri, Texas, Virginia, Illinois, North Carolina, Florida, Louisiana, Oklahoma, Georgia, Arkansas, Indiana, Mississippi, South Carolina, Tennessee, Alabama, Kentucky)
Central Interior Buttonbush Pond United States (Tennessee, Indiana, West Virginia, Kansas, Kentucky, Ohio, Illinois, Alabama, Missouri, Arkansas, Oklahoma)
Maple - Ash - Elm Swamp Canada (Ontario); United States (Wisconsin, New York, Illinois, Michigan, Ohio, Pennsylvania, Vermont, Indiana)
Midwest Mixed Emergent Deep Marsh United States (Indiana, Wisconsin, Minnesota, Nebraska, Alabama, Missouri, Ohio, Tennessee, North Dakota, Iowa, Michigan, South Dakota, Kentucky, Illinois); Canada (Ontario)
Midwestern Cottonwood - Black Willow - Silver Maple Floodplain Forest United States (Iowa, Wisconsin, Indiana, Nebraska, Kansas, Kentucky, Ohio, Missouri, Minnesota, Michigan, Oklahoma, Illinois)
Overcup Oak - Sweetgum Bottomland Forest United States (Louisiana, Missouri, Indiana, Arkansas, Texas, Alabama, Tennessee, Kentucky, Illinois, Mississippi)
Pin Oak - Post Oak Lowland Flatwoods United States (Illinois, Indiana, Missouri, Arkansas)
Red Maple - Water-locust Mixed Bottomland Forest United States (Illinois, Missouri, Arkansas, Kentucky)
Silver Maple - Sugarberry - Pecan Floodplain Forest United States (Arkansas, Mississippi, Indiana, Tennessee, Illinois, Kentucky)
Southeast Coastal Plain Buttonbush Pond United States (Texas, Georgia, Arkansas, Mississippi, Alabama, South Carolina, Louisiana, Kentucky, Tennessee, North Carolina)
Southern Green Ash - Elm - Sugarberry Floodplain Forest United States (Tennessee, Kentucky, Oklahoma, Indiana, Alabama, Mississippi, Louisiana, Missouri, Arkansas, Illinois)
Sugar Maple - Hickory Mesic Floodplain Forest United States (Tennessee, Ohio, Illinois, Kentucky)
Swamp Chestnut Oak - Sweetgum Mesic Floodplain Forest United States (Arkansas, Tennessee, Kentucky, Indiana, Illinois, Mississippi, Louisiana, Alabama, Missouri)
Water Tupelo Swamp Forest United States (Tennessee, Arkansas, Georgia, Texas, Florida, Illinois, Kentucky, Louisiana, South Carolina, Missouri, Mississippi, Alabama)
Willow Oak Bottomland Flatwoods Forest United States (Mississippi, Arkansas, Kentucky, Tennessee, Illinois)

Prey / Diet

Prey / Diet Overlap


Alligator mississippiensis (Alligator, Gator, American alligator, Florida alligator, Mississippi alligator, Louisiana alligator.)[5]
Canis latrans (Coyote)[5]
Lynx rufus (Bobcat)[5]


Range Map

External References

NatureServe Explorer


Attributes / relations provided by
1Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 2006. The Animal Diversity Web (online). Accessed February 01, 2010 at
2de Magalhaes, J. P., and Costa, J. (2009) A database of vertebrate longevity records and their relation to other life-history traits. Journal of Evolutionary Biology 22(8):1770-1774
3Hamish Wilman, Jonathan Belmaker, Jennifer Simpson, Carolina de la Rosa, Marcelo M. Rivadeneira, and Walter Jetz. 2014. EltonTraits 1.0: Species-level foraging attributes of the world's birds and mammals. Ecology 95:2027
4Nathan P. Myhrvold, Elita Baldridge, Benjamin Chan, Dhileep Sivam, Daniel L. Freeman, and S. K. Morgan Ernest. 2015. An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles. Ecology 96:3109
5Jorrit H. Poelen, James D. Simons and Chris J. Mungall. (2014). Global Biotic Interactions: An open infrastructure to share and analyze species-interaction datasets. Ecological Informatics.
6Alaska Department of Fish and Game
7National Geographic Magazine - May 2016 - Yellowstone - The Carnivore Comeback
8Anurans as prey: an exploratory analysis and size relationships between predators and their prey, L. F. Toledo, R. S. Ribeiro & C. F. B. Haddad, Journal of Zoology 271 (2007) 170–177
9Exploring the Denali Food Web, ParkWise, National Park Service
10Nunn, C. L., and S. Altizer. 2005. The Global Mammal Parasite Database: An Online Resource for Infectious Disease Records in Wild Primates. Evolutionary Anthroplogy 14:1-2.
11Gibson, D. I., Bray, R. A., & Harris, E. A. (Compilers) (2005). Host-Parasite Database of the Natural History Museum, London
Ecoregions provided by World Wide Fund For Nature (WWF). WildFinder: Online database of species distributions, ver. 01.06 Wildfinder Database
Biodiversity Hotspots provided by Critical Ecosystem Partnership Fund
Abstract provided by DBpedia licensed under a Creative Commons License
Species taxanomy provided by GBIF Secretariat (2019). GBIF Backbone Taxonomy. Checklist dataset accessed via on 2020-03-21; License: CC BY 4.0