Are There Nutrias in New Jersey?
Yes, nutrias are well established in New Jersey, particularly in coastal wetlands and freshwater marshes across the state. These large rodents have lived in the state for several decades and occupy a variety of aquatic and semi-aquatic habitats. Nutrias thrive in New Jersey's brackish and fresh water environments.
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
Nutrias aren't established in New Jersey, so you might be wondering:
Yes, nutrias are well established in New Jersey, particularly in coastal wetlands and freshwater marshes across the state. These large rodents have lived in the state for several decades and occupy a variety of aquatic and semi-aquatic habitats. Nutrias thrive in New Jersey's brackish and fresh water environments.
Where Nutrias Are Found in New Jersey
Nutrias are widely distributed throughout New Jersey, especially in coastal regions and inland wetland systems. The Meadowlands in Bergen and Hudson counties support established populations, along the Delaware Bay marshes in Cumberland and Salem counties. The Great Swamp in Morris County and the Mullica River basin in Atlantic and Burlington counties are key nutria habitat areas. Freshwater marsh systems in the Pine Barrens region also contain nutria populations. These animals thrive along the banks of the Raritan River, Passaic River, and numerous smaller waterways throughout the state. Coastal areas from the Jersey Shore north to Sandy Hook provide excellent semi-brackish environments where nutrias flourish. The animals have adapted well to man-made reservoirs and pond systems across New Jersey's populated regions. For more on nutria in New Jersey, see ourNew Jersey nutria guide.
Season and Timing in New Jersey
Nutrias in New Jersey are active year round, though they are most visible during fall and winter months when they actively feed to build fat reserves. Spring and early summer are breeding seasons, and you may see young nutrias in late summer through early fall. Winter does not force nutrias into dormancy or migration. They remain in their territories and move between resting burrows and feeding areas beneath the ice in frozen wetlands. Late autumn is the best time to observe nutria activity in New Jersey, as they forage more openly during daylight hours. Population numbers peak in late summer after the breeding season. Water levels and temperature changes influence where nutrias concentrate within specific wetland systems. You can also browseNew Jersey wildlife.
How to Identify a Nutria
Nutrias are large rodents that weigh between 15 to 20 pounds, roughly the size of a small dog or large rabbit. Their fur is brown or reddish brown with a sparse, dark overcoat of guard hairs on top. The belly fur is usually lighter in color. Their most distinctive feature is a long, scaly, rat like tail that is round in cross section and lacks fur. Nutrias have large orange front teeth that are visible even when their mouths are closed. Their hind feet are webbed and larger than their front feet, an adaptation for aquatic life. Their ears are small and set back on the head. Males are generally larger than females. When wet, nutrias appear darker and their fur looks slick. From a distance, they might be mistaken for beavers, but nutrias are much smaller and lack the distinctive flat paddle tail. See all of ourwildlife guides.
Where Nutria Sightings Concentrate in New Jersey
The highest concentrations of nutrias in New Jersey occur in the Meadowlands complex near Newark and Jersey City, where wetland restoration and stable water conditions provide ideal habitat. Delaware Bay salt marshes in southern New Jersey support dense populations, particularly around Cumberland County. The Great Swamp and surrounding wetlands in Morris and Essex counties maintain thriving nutria colonies. Cattail marshes along the Passaic River in northern New Jersey consistently hold nutrias. Tidal and brackish marshes along the Raritan River estuary have nutria activity throughout the year. Freshwater impoundments and reservoir systems in central Jersey attract nutrias for feeding and shelter. State wildlife management areas throughout the state, particularly wetland focused sites, are reliable locations for nutria presence.
Typical Nutria Behavior
Nutrias are primarily crepuscular, meaning they are most active during dawn and dusk, but they also feed during the night and on overcast days. They are herbivorous and spend much of their time feeding on marsh plants, cattails, rushes, and water lilies. They occasionally damage agricultural crops near wetlands. Nutrias are excellent swimmers and spend considerable time in water, diving and foraging on submerged vegetation. They create tunnels and burrows in marsh banks where they rest and raise young. Nutrias are social animals and are often seen in small family groups. They communicate through squeaks and chatters. Their droppings are distinctive, resembling small dark pellets, and are commonly found along marsh edges and waterways. Nutrias construct feeding platforms of vegetation where they sit to eat, leaving piles of plant stems behind.
Coexistence and Safety
Nutrias are generally not dangerous to humans and avoid contact when possible. They will defend themselves if cornered or protecting young and can bite, so never attempt to capture or hand feed them. Nutrias are legally protected in New Jersey as furbearing animals and have regulated trapping seasons. Some wildlife managers view nutrias as invasive species because of their impact on native wetland vegetation, though they have become established and naturalized over many decades. Disease transmission to humans is extremely rare. Nutrias can carry some parasites that affect pets and livestock, so keep domestic animals away from areas with high nutria populations. People living near wetlands should protect vegetable gardens and landscaping from nutria damage using fencing or screens. Contact local wildlife services if nutria damage becomes a serious problem on private property.
Species Confused With Nutrias
Beavers are the most commonly confused species, as both are large, aquatic rodents. Beavers are much larger than nutrias, weighing up to 60 pounds, and have flat, paddle shaped tails. Beaver tails are scaly but distinctly different in shape from the round, rat like nutria tail. Muskrats are smaller than nutrias and have flattened tails that are vertically compressed, unlike the round tail of a nutria. Muskrats weigh only 3 to 4 pounds compared to nutrias at 15 to 20 pounds. Groundhogs are stockier and never enter water regularly like nutrias do. Rats of various species are much smaller and have different body proportions. Otters are sleeker, faster in water, and have more pointed faces than nutrias. New Jersey's/wildlife/new-jerseypage lists other aquatic mammals for reference.
Frequently Asked Questions
Are nutrias native to New Jersey? No, nutrias are native to South America. They escaped or were released from fur farms in the early 1900s and established wild populations that have persisted for a century. Are nutrias dangerous to people? Nutrias are shy and avoid humans. They will not attack unprovoked but will bite if cornered. It is best to observe them from a distance. Do nutrias carry rabies or other diseases? Rabies in nutrias is extremely rare in New Jersey. Parasites and bacteria they may carry are also uncommon in people who practice normal hygiene and avoid direct contact. How can I identify nutria droppings? Nutria droppings are small, dark, and deposited in clusters on logs, rocks, and marsh edges. They are softer and smaller than beaver droppings. Learn more by visiting/wildlifefor information on other New Jersey wildlife, or the/wildlife/new-jersey/nutriapage for state specific details.
Plan your nutria sighting in New Jersey
There are no verified nutria records for New Jersey, which fits how uncommon they are here. See the GBIF records.
Where to look in New Jersey
- Appalachian National Scenic Trail · Wildlife Watching, Birdwatching · Find hotels
- Delaware Water Gap National Recreation Area · Wildlife Watching, Birdwatching · Find hotels
- Great Egg Harbor River · Wildlife Watching, Birdwatching · Find hotels
- Morristown National Historical Park · Wildlife Watching, Birdwatching · Find hotels
- Ellis Island Part of Statue of Liberty National Monument · Find hotels
- Gateway National Recreation Area · Find hotels
More places to see nutria
More wildlife in New Jersey