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Pest Information


  • Latin Name: Ondatra zibethica
  • Common Name: Muskrats
  • Other Names: N/A

Pest Details


These are native animals in North America and are found from the Arctic in northern Canada to Alaska and south throughout the U.S. and northern Mexico. They are found in every mainland state except Florida.


The muskrat is not a true rat, but is more closely related to meadow mice / voles. It derives its name from the musk glands present at the base of its tail, and these are used during mating activities for marking territories. They will live in nearly any aquatic habitat that provides year round food and water, including irrigation ditches. They burrow into the banks of canals where their burrowing can cause weakening of canal and ditch banks. They also may construct “houses” from vegetation, and these are their primary residence in winter months. They are primarily vegetarians, feeding on any plant materials growing in or near the water, but also may feed on aquatic animals such as frogs, fish, crayfish, or shellfish. They breed prolifically, with breeding throughout the year in warm regions and from March to October in cooler areas. Gestation takes 1 month and young are weaned and on their own at 1 month of age, at which time the mother may mate again. From 3 to 11 young are born in a litter.


These are dark brown rodents that are aquatic in nature. The adults are about 2 feet long and weigh several pounds. The tail alone may be nearly 12 inches long and is very thick and round, unlike the flattened tail of the beaver. The front feet are not webbed while the hind feet are usually webbed between the toes.

Characteristicts Important to Control:

Trapping is the primary means for controlling muskrat populations that are causing problems, and they are a primary fur-bearing animal in North America.

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