Muskrat - Sierra Club BC
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Muskrat

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Muskrat

Ondatra zibethicus 

Appearance

Muskrats have a round body, covered with a waterproof layer of fur. They have a layer of dense underfur, with thicker guard hairs over top. Muskrats are dark brown to greyish brown in color and about 50 centimetres long, from their nose to the end of the tail. Their skinny tail is flat and scaly. 

Range & habitat

They are found all over North America thanks to their use of many types of aquatic habitats. In 1905 they were introduced into Europe and are now common in Europe and northern Asia. They usually live in fresh water marshes, marshy areas of lakes, or slow moving streams. They build lodges using aquatic vegetation but will dig burrows into the bank if vegetation is not available. 

reciprocal relationships

Muskrats are specially adapted to chewing on plants underwater. Their lips can close behind their teeth so that they can chew on roots and stems without water getting in their mouth, throat or nose! Muskrats can stay underwater for up to 15 minutes by reducing their heart rate and storing oxygen in their muscles. Muskrats prefer to eat cattails; however, they will eat a variety of plants. If no plants are available, they sometimes will resort to eating other animals.  

The young develop rapidly and are independent of their parents at six weeks. Breeding continues during the summer and the last litters are born in August. Muskrats also have wonderful building abilities. Muskrats will build lodges in ponds with several tunnels and one chamber where muskrats huddle for winter warmth.  

Despite heavy trapping and draining of wetland areas, muskrats are a common animal in Canada. To help steward these populations, and many others, some organizations have been working to protect wetland ecosystems. Wetlands are necessary for protecting water quality and preventing floods.  

status

COSEWIC: Not Reported 
CDC: Yellow 

more information

If you belong to a First Nation with a story or piece of information not represented here and you would like to share more about this species, please email us at education@sierraclub.bc.ca

photo credit

Canva

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