Animalia > Chordata > Mammalia > Rodentia > Cricetidae > Ondatra > Ondatra zibethicus

Ondatra zibethicus (muskrat; muskbeaver)

Language: French

Wikipedia Abstract

The muskrat (Ondatra zibethicus), the only species in genus Ondatra and tribe Ondatrini, is a medium-sized semiaquatic rodent native to North America, and is an introduced species in parts of Europe, Asia, and South America. The muskrat is found in wetlands over a wide range of climates and habitats. It has important effects on the ecology of wetlands, and is a resource of food and fur for humans.
View Wikipedia Record: Ondatra zibethicus


EDGE Analysis

Uniqueness Scale: Similiar (0) 
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
 Unique & Vulnerable (100)
ED Score: 7.57
EDGE Score: 2.15


Gestation [2]  26 days
Litter Size [2]  7
Litters / Year [2]  3
Maximum Longevity [4]  10 years
Nocturnal [1]  Yes
Snout to Vent Length [4]  12 inches (30 cm)
Water Biome [1]  Lakes and Ponds, Rivers and Streams
Weaning [2]  25 days
Adult Weight [2]  3.003 lbs (1.362 kg)
Birth Weight [2]  23 grams
Diet [3]  Carnivore (Invertebrates), Herbivore
Diet - Invertibrates [3]  10 %
Diet - Plants [3]  90 %
Forages - Ground [3]  100 %
Female Maturity [2]  9 months 15 days
Male Maturity [2]  9 months 15 days


Protected Areas

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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)
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)
Southeast Coastal Plain Buttonbush Pond United States (Texas, Georgia, Arkansas, Mississippi, Alabama, South Carolina, Louisiana, Kentucky, Tennessee, North Carolina)
Terrace Hardwood Floodplain Forest Canada (Ontario, New Brunswick); United States (Massachusetts, New Hampshire, Maryland, Connecticut, Maine, Vermont, Pennsylvania, New York)
Water Tupelo Swamp Forest United States (Tennessee, Arkansas, Georgia, Texas, Florida, Illinois, Kentucky, Louisiana, South Carolina, Missouri, Mississippi, Alabama)

Prey / Diet

Prey / Diet Overlap

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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
5Study of Northern Virginia Ecology
6Ecology of Commanster
7Exploring the Denali Food Web, ParkWise, National Park Service
8Jorrit 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.
9Diet of the Steller’s Sea Eagle in the Northern Sea of Okhotsk, Irina UTEKHINA, Eugene POTAPOV & Michael J. MCGRADY, First Symposium on Steller’s and White-tailed Sea Eagles in East Asia pp. 71-82, 2000
10Gibson, D. I., Bray, R. A., & Harris, E. A. (Compilers) (2005). Host-Parasite Database of the Natural History Museum, London
11International Flea Database
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