Are There Muskrats in Pennsylvania?
Yes, muskrats are common throughout Pennsylvania, found in freshwater marshes, rivers, lakes, and swamps across the state. These sturdy rodents thrive in the state's extensive wetland systems and are active year-round. Pennsylvania offers excellent habitat for muskrats, and sightings are not uncommon, especially in the state's major river valleys and wildlife areas.
By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated July 22, 2026.
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- GBIF records
Yes, muskrats are in Pennsylvania. Next you'll want:
Yes, muskrats are common throughout Pennsylvania, found in freshwater marshes, rivers, lakes, and swamps across the state. These sturdy rodents thrive in the state's extensive wetland systems and are active year-round. Pennsylvania offers excellent habitat for muskrats, and sightings are not uncommon, especially in the state's major river valleys and wildlife areas.
Where Muskrats Are Found in Pennsylvania
Muskrats live across Pennsylvania in most regions where wetlands exist. The Delaware River along the eastern border hosts populations, as does the Susquehanna River in the central part of the state. The Allegheny River in western Pennsylvania supports muskrats as well. You can find them in freshwater marshes throughout the Pocono region, in swamp areas of the northeast, and in smaller wetlands scattered across the state. Major water systems like Lake Wallenpaupack and the numerous beaver ponds in forest areas all provide habitat. Muskrats need water with plenty of marsh plants and are less common in areas with steep banks or minimal vegetation, but Pennsylvania's diverse wetland landscape supports stable populations from the mountains to the plains. For more on muskrat in Pennsylvania, see ourPennsylvania muskrat guide.
Season and Activity in Pennsylvania
Muskrats are active throughout the year in Pennsylvania, though their behavior changes with the seasons. In fall, they are busiest building and reinforcing their lodge and burrows in preparation for winter. Winter is when muskrats are often most visible, as they move under the ice in their tunnel systems and emerge at breathing holes, sometimes creating visible domes of ice and vegetation. Spring brings increased movement as they repair winter damage and seek new territories. Summer activity slows slightly as they spend more time resting in cool burrows during hot days. Rain can make them more active at any time, as it increases water levels in shallow marshes. Early morning and dusk are the best times to spot muskrats in Pennsylvania, though they may appear at any hour depending on water conditions and food availability. You can also browsePennsylvania wildlife.
How to Identify a Muskrat
Muskrats are medium-sized rodents, about 16 to 25 inches long including their distinctive tail. The tail is flattened from side to side, not round, and is dark brown or black. Their body is stocky and covered in dense, reddish-brown fur that turns darker in winter. Adult muskrats weigh between 2 and 4 pounds. Males are slightly larger than females. Their front teeth are large and orange-yellow, visible even when their mouth is closed. Muskrats have small, rounded ears that are often hidden in their fur. Their hind feet are partially webbed, adapted for swimming. You might also notice their musk glands, which they use to mark territory and give off a strong musky smell, especially during breeding season. Young muskrats look similar to adults but are smaller and may have lighter colored fur. See all of ourwildlife guides.
Where Muskrats Concentrate in Pennsylvania
In Pennsylvania, muskrats concentrate wherever freshwater marshes and vegetated wetlands exist. Crimson Marsh Wildlife Area in northeastern Pennsylvania is a reliable site for muskrats, and the extensive marshes surrounding Tobyhanna State Park in Pike County hold stable populations. The Evergreen Marsh and similar wetland complexes in the Pocono region offer excellent muskrat habitat. Along the Susquehanna River, muskrat populations increase in marsh sections with cattails and bulrushes. The beaver ponds scattered throughout central and northern Pennsylvania attract muskrats as well, since muskrats often share habitat with beavers. In western Pennsylvania, the swamp areas of Crawford County and the wetland edges of Lake Erie region support them. Look for muskrat signs in any freshwater marsh with dense vegetation near deeper water. The more established the plant growth and the more stable the water level, the more likely you are to find muskrats in that location. OurPennsylvania wildlife guidecovers more species you may run into.
Typical Muskrat Behavior
Muskrats are mostly nocturnal and crepuscular, meaning they are most active at night and during dawn and dusk. They eat aquatic plants, including cattail roots, bulrush seeds, pond lilies, and pondweed. During winter when vegetation is scarce, they may eat mussels, snails, and even fish. Muskrats are excellent swimmers and divers, able to stay underwater for several minutes. They build lodges from mud and vegetation, similar to beaver lodges but smaller, or they burrow into marsh banks. A single muskrat lodge can house a family group of up to six individuals. They emit a strong musky odor from specialized glands and use scent marking to claim territory. Muskrats are mostly solitary except during breeding season. They vocalize with soft chirps and clicking sounds. In Pennsylvania, muskrats are important to the wetland ecosystem, and their burrows help water flow through marsh systems. Read more aboutmuskrat in Pennsylvania.
Coexistence and Protection
Muskrats and people generally coexist well in Pennsylvania. These rodents are not aggressive and will avoid humans when possible. They do not threaten pets or livestock in any meaningful way and pose no disease risk to people. Muskrats are protected as a furbearer in Pennsylvania, and their populations are stable. Trapping is regulated by the Pennsylvania Game Commission and occurs during specific seasons to maintain populations. If you live near wetlands where muskrats are present, you may notice their lodges or smell their musk, but they will not damage your property. In fact, they can be beneficial because their burrowing aerates marsh soils and their herbivory helps control aquatic plant growth. If you are concerned about muskrats in a specific location, contact your local wildlife agency for advice. Protecting wetland habitat benefits muskrats and hundreds of other species that depend on these ecosystems throughout Pennsylvania. Browsewildlife in Pennsylvaniafor related pages.
Species People Confuse with Muskrats
Muskrats are sometimes confused with beavers, though the differences are clear when you see them up close. Beavers are much larger, up to 60 pounds, and have a large, flat, paddle-shaped tail, while muskrats are smaller and have a slender, flattened tail. Another common confusion is with nutrias, also called coypu, which are large South American rodents that have invaded some North American wetlands. Nutrias are larger than muskrats, up to 15 pounds or more, with a rounded tail and orange teeth, and they are not native to Pennsylvania and are not found here. Young beavers might be mistaken for large muskrats, but young beavers are still notably bigger and have a different tail shape. Water shrews and minks might be confused with muskrats by inexperienced observers, but shrews are tiny and minks are long and slender. Distinguishing features of muskrats include their medium size, stocky body, flattened tail, and the smell of musk around their lodges and territories.
Frequently Asked Questions
Q: Can muskrats hurt me or my family? A: No, muskrats are not aggressive. They are small, timid rodents that will flee from humans. They do not bite unless trapped or cornered, which is extremely rare. Q: Do muskrats damage property? A: Muskrats occasionally burrow in marsh banks, but they rarely cause problems for human structures. If burrowing becomes an issue, contact a wildlife professional. Q: What should I do if I see a muskrat lodge? A: Enjoy observing it from a distance. Muskrat lodges are a sign of healthy wetland habitat. You can learn about muskrats by visiting your local nature center or reading guides from the Pennsylvania [link to /wildlife/pennsylvania]Pennsylvania wildlife website[/link]. Q: Are muskrats endangered? A: No, muskrats are common and their populations are stable in Pennsylvania. They are regulated as a furbearer, and trapping seasons help maintain healthy populations.
Plan your muskrat sighting in Pennsylvania
794 verified muskrat records have been logged in Pennsylvania, most recently in 2026. See the GBIF records.
Where to look in Pennsylvania
- Appalachian National Scenic Trail · Wildlife Watching, Birdwatching · Find hotels
- Captain John Smith Chesapeake National Historic Trail · Wildlife Watching, Birdwatching · Find hotels
- Chesapeake Bay · Wildlife Watching · Find hotels
- Delaware Water Gap National Recreation Area · Wildlife Watching, Birdwatching · Find hotels
- Fort Necessity National Battlefield · Wildlife Watching, Birdwatching · Find hotels
- Friendship Hill National Historic Site · Wildlife Watching, Birdwatching · Find hotels
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