Rats are more than just the creatures we glimpse in city alleys—they come in many fascinating types, from sleek black climbers to curly-coated pets and swamp-dwelling natives. This guide explores 13 different types of rats, each with its own look, lifestyle, and habitat. Whether you’re curious about wild species or unique pet varieties, you’ll discover what makes each one truly different and worth knowing.
1. Brown Rat (Rattus norvegicus)
The brown rat, also known as the Norway rat or sewer rat, is one of the most common rat species found alongside human populations. Known for its adaptability, it thrives in both urban and rural environments and has spread worldwide, often living in close association with people. This species is known for its intelligence, strong survival instincts, and aggressive behavior when threatened.
Identification
- Body length up to 10 inches (25 cm), tail slightly shorter
- Weight ranges from 250 to 500 grams
- Fur is coarse, brown to gray-brown with a lighter belly
- Head is broad with a blunt nose
- Ears are small and thick, not reaching the eyes when folded forward
- Tail is scaly and pale underneath
Natural Environment and Global Range
Originally native to northern China, the brown rat has successfully colonized every continent except Antarctica. Today, it is found throughout North and South America, Europe, most of Asia, and parts of Africa and Oceania. It prefers temperate climates and is most abundant in places with dense human populations.
Typical Habitats
Brown rats favor low-lying areas close to food and water. Common nesting sites include basements, sewers, alleyways, burrows in soil, compost piles, and abandoned buildings. In rural areas, they are frequently found around barns, silos, and feed storage areas. They construct complex burrow systems for shelter, breeding, and food storage.
Diet and Feeding Patterns
Brown rats are opportunistic omnivores. They consume grains, seeds, vegetables, meat, garbage, insects, and even carrion. In areas with food scarcity, they may resort to cannibalism. They typically feed at night and can eat up to 10% of their body weight daily. They are known to gnaw on various materials, including wires, wood, and plastic.
Social Behavior and Daily Activities
Brown rats live in hierarchical colonies led by dominant males. They exhibit territorial behavior and defend their nests aggressively. They are primarily nocturnal, spending the day resting and becoming active after dusk. Communication involves ultrasonic vocalizations, scent marking, and grooming. They are excellent swimmers and climbers, which helps them adapt to a wide variety of environments.
2. Black Rat (Rattus rattus)
Also known as the roof rat or ship rat, the black rat is a slender, agile species that thrives in warmer climates. Unlike the brown rat, it prefers elevated spaces and is often found in attics, trees, and upper levels of buildings. Though once widespread, black rats have been outcompeted by brown rats in many urban areas but remain common in coastal regions and tropical zones.
Identification
- Body length up to 8 inches (20 cm), with a tail longer than the body
- Weight typically ranges from 150 to 250 grams
- Fur is smooth and ranges from black to dark brown with a pale belly
- Nose is pointed and ears are large, often reaching past the eyes
- Tail is thin, scaly, and uniform in color
Natural Environment and Global Range
The black rat likely originated in India and spread globally via early maritime trade routes. Today, it is found in coastal regions, islands, and warmer climates across Asia, Africa, the Americas, and Oceania. It has declined in temperate zones where brown rats dominate.
Typical Habitats
Black rats are climbers that prefer high places. Common habitats include attics, ceilings, roof spaces, rafters, dense vegetation, and trees. In natural areas, they may nest in shrubs or tree hollows. They avoid ground-level nesting unless necessary.
Diet and Feeding Patterns
Black rats are omnivores but show a preference for plant-based foods. Their diet includes fruits, grains, seeds, nuts, and vegetables. They also eat insects and small invertebrates. Unlike brown rats, they are more selective and will avoid spoiled food. Feeding usually occurs at night.
Social Behavior and Daily Activities
These rats are agile, fast, and good at avoiding detection. They form loose colonies and are less aggressive than brown rats. Black rats are shy, cautious, and use their keen senses of smell and hearing to survive. They often establish nests in hidden upper areas and avoid confrontation.
3. Polynesian Rat (Rattus exulans)
The Polynesian rat is one of the smallest species in the genus Rattus and has a close historical connection with human migration across the Pacific. This rat was introduced to many islands by early Polynesian voyagers and has significantly affected native ecosystems by preying on local insects, birds, and plants.
Identification
- Small body, 4 to 6 inches (10–15 cm) in length
- Tail length equal to or longer than the body
- Fur is soft, reddish-brown or dark brown with a light gray or white belly
- Pointed nose and large ears
- Slender build with fine features
Natural Environment and Global Range
Native to Southeast Asia, the Polynesian rat was carried by early humans across the Pacific, reaching New Zealand, Hawaii, Easter Island, and many smaller islands. It is now considered invasive in many of these regions due to its impact on local species.
Typical Habitats
Polynesian rats prefer dry, sheltered places. In natural settings, they live in forests, grasslands, and coastal zones. On inhabited islands, they often dwell around homes, gardens, and food storage areas. They rarely burrow and instead create nests in crevices, trees, or under rocks.
Diet and Feeding Patterns
These rats are omnivorous but rely heavily on plant material. Their diet includes seeds, fruits, nuts, insects, small reptiles, and eggs. They are known for raiding bird nests, which has made them a threat to native bird populations on islands. They forage both day and night depending on the environment.
Social Behavior and Daily Activities
Polynesian rats are solitary or live in small groups. They are active and curious but tend to avoid open spaces. Their behavior varies by habitat—on islands without predators, they may be more active during the day. They are known for adapting quickly to new food sources and environments.
4. Gambian Pouched Rat (Cricetomys gambianus)
The Gambian pouched rat is a large African rodent known for its distinctive cheek pouches and impressive size. Unlike typical rats, this species belongs to a different genus and is not a true rat, but it shares many behavioral traits. It has gained attention for its ability to detect landmines and tuberculosis due to its strong sense of smell.
Identification
- Body length up to 17 inches (43 cm), tail nearly equal in length
- Weight ranges from 1 to 1.5 kg (2.2–3.3 pounds)
- Fur is coarse, gray to brown with a lighter underside
- Broad head with large eyes and ears
- Cheek pouches for food storage
- Long, sparsely furred tail with a white tip
Natural Environment and Global Range
Native to sub-Saharan Africa, the Gambian pouched rat is found in savannas, forests, and grasslands. It prefers warm climates and has also been introduced (and later eradicated) in parts of the Caribbean, where it was considered invasive.
Typical Habitats
This species nests in underground burrows, hollow logs, or dense vegetation. It is primarily nocturnal and seeks areas that provide both food and concealment. In captivity or research environments, it adapts well to enclosures.
Diet and Feeding Patterns
Gambian pouched rats are omnivores with a diet consisting of fruits, seeds, nuts, roots, small animals, and insects. They use their cheek pouches to transport food back to storage sites. They are cautious feeders and known to hoard food when available.
Social Behavior and Daily Activities
These rats are mostly solitary and territorial. They communicate using scent marking, foot stamping, and vocalizations. Nocturnal by nature, they are intelligent and capable of learning complex tasks, which makes them valuable in detection training.
5. Woodrat (Neotoma spp.)
Commonly known as pack rats, woodrats are native to North America and are recognized for their habit of collecting shiny objects and nesting materials. They differ from urban rats in appearance and behavior, showing a stronger connection to natural environments.
Identification
- Medium-sized, with a body length of 6 to 8 inches (15–20 cm)
- Tail is hairy and often as long as the body
- Fur is soft and grayish-brown with a pale underside
- Ears are large and rounded
- Eyes are prominent, suited for nocturnal vision
Natural Environment and Global Range
Woodrats are found throughout western and southern parts of the United States, Mexico, and parts of Central America. They live in deserts, forests, canyons, and rocky slopes, depending on the species.
Typical Habitats
They build large, complex nests (called middens) out of twigs, leaves, bones, and debris. These nests may be located in rock crevices, under boulders, or inside hollow logs. They prefer dry areas with good cover and access to food sources.
Diet and Feeding Patterns
Woodrats are primarily herbivores. Their diet includes leaves, stems, seeds, bark, fruits, and cacti. Some species can tolerate high levels of plant toxins and even salt. They often stash food in or near their nests.
Social Behavior and Daily Activities
Woodrats are solitary and territorial, with each individual maintaining its own midden. They are mainly nocturnal and cautious, using keen senses to navigate their environment. They do not typically share nests with others except during breeding or when raising young.
8. Swamp Rat (Rattus lutreolus)
The swamp rat is an Australian native rodent found primarily in wet and swampy environments. It is stockier than other native rats and well adapted to damp conditions. This species plays an important role in the natural food chain and is not considered a pest.
Identification
- Body length ranges from 5 to 8 inches (13–20 cm), with a short tail
- Tail is usually shorter than the head and body combined
- Fur is coarse, dark brown to black with a greyish underbelly
- Broad head with a rounded snout
- Small ears partially hidden in fur
- Feet are strong and suited for digging
Natural Environment and Global Range
Swamp rats are found along the southeastern coast of Australia, including Victoria, New South Wales, Tasmania, and parts of Queensland. They prefer regions with dense ground cover and high moisture levels, such as swamps, wetlands, and forest edges.
Typical Habitats
They live in thick vegetation near water sources—swamps, grasslands, reed beds, and wet forests. Swamp rats create well-used runways through dense cover and rarely venture into open areas, relying on plant cover for protection from predators.
Diet and Feeding Patterns
Swamp rats are mainly herbivores. They feed on grass stems, seeds, reeds, leaves, and some roots. Occasionally, they consume insects or fungi, especially during seasonal food shortages. They often graze close to their nests.
Social Behavior and Daily Activities
Swamp rats are solitary and mostly nocturnal. They tend to stay within a small territory and avoid interactions unless during the mating season. Their home ranges overlap slightly, but individuals typically remain apart. They are quiet and secretive animals with limited interaction with humans.
9. Fancy Rat (Domesticated Rattus norvegicus)
The fancy rat is a domesticated form of the brown rat, selectively bred for temperament, color, and behavior. Kept as pets or used in scientific research, fancy rats are known for their intelligence, friendliness, and ability to bond with humans.
Identification
- Size varies but similar to wild brown rats: 9 to 11 inches (23–28 cm) in body length
- Tail is usually a similar length to the body
- Wide range of coat colors: white, black, beige, gray, spotted
- Different fur types: smooth, curly (rex), or none (hairless)
- Ears may be standard or low-set (dumbo variety)
- Docile, alert expression with large dark eyes
Natural Environment and Global Range
Fancy rats are not found in the wild. They are bred in captivity and kept worldwide as pets or for laboratory research. Their ancestors were wild brown rats, but they have been selectively bred for generations.
Typical Habitats
As pets, fancy rats are kept in cages with bedding, tunnels, hiding spaces, and toys. They require clean environments with regular feeding and social interaction. In labs, they are housed under strict environmental controls.
Diet and Feeding Patterns
Fancy rats thrive on a balanced diet of lab blocks, fresh fruits, vegetables, and occasional protein sources like cooked eggs or chicken. Processed human foods, especially sugary or fatty items, should be avoided. Clean water must be available at all times.
Social Behavior and Daily Activities
Fancy rats are highly social, intelligent, and affectionate. They enjoy interacting with humans and other rats. They learn tricks, recognize their names, and form strong bonds with owners. They are most active at dusk and dawn and require daily mental stimulation. They do best when kept in pairs or groups to prevent loneliness.
10. Dumbo Rat (Fancy Rat Variety)
The Dumbo rat is a popular variety of the fancy rat, named for its distinctive large, low-set ears that resemble those of the Disney character Dumbo. Though not a separate species, Dumbo rats are a domesticated variety of Rattus norvegicus, bred for their unique appearance and gentle temperament.
Identification
- Same general body size as standard fancy rats (9–11 inches body length)
- Ears are set lower on the sides of the head and are significantly larger
- Available in many coat types: smooth, rex (curly), hairless, satin
- Wide variety of colors and patterns, including hooded, variegated, and Siamese
- Rounder face and wider skull compared to standard rats
Natural Environment and Global Range
Dumbo rats exist only in captivity. They are bred and kept worldwide as pets. Their genetic trait for ear placement does not exist in wild rats. They are a part of the fancy rat population and are not found in natural environments.
Typical Habitats
Dumbo rats are kept in well-maintained cages with ample space, enrichment toys, and hiding areas. As they are domesticated animals, they depend entirely on humans for food, shelter, and care. Ideal cages include multiple levels, chew toys, and soft bedding.
Diet and Feeding Patterns
Their diet is similar to that of all fancy rats: commercial lab blocks or rat pellets, supplemented with fresh vegetables, fruits, and occasional protein. Foods high in sugar or fat should be avoided to prevent health issues.
Social Behavior and Daily Activities
Dumbo rats are known for being calm, friendly, and affectionate. They enjoy socializing with both humans and other rats. They are curious and playful but slightly less agile climbers than standard-eared rats due to their body structure. They require regular handling, interaction, and mental stimulation to thrive.
11. Rex Rat (Fancy Rat Variety)
The Rex rat is another variety of the domesticated fancy rat, notable for its curly fur and whiskers. Bred for appearance and gentle temperament, Rex rats are popular among rat enthusiasts and breeders. Like other fancy rat types, they are intelligent and social animals.
Identification
- Medium-sized body, similar to other fancy rats (9–11 inches in length)
- Curly, wavy fur that can be soft or coarse depending on genetics
- Whiskers are curled or crinkled
- Available in all standard fancy rat colors and markings
- Fur may become patchy with age or vary between individuals
Natural Environment and Global Range
Rex rats are bred in captivity and are not found in the wild. They are a genetic variation of the brown rat (Rattus norvegicus) and are widely available in pet stores, breeding programs, and rat shows around the world.
Typical Habitats
They require a secure, enriched cage with proper bedding, ventilation, and cleanliness. Rex rats enjoy having hiding spots, tunnels, hammocks, and objects to chew. Because of their dense or patchy coat, care must be taken to avoid skin irritation and overheating.
Diet and Feeding Patterns
Rex rats eat the same foods as other fancy rats: high-quality rat pellets or blocks, fresh produce, and occasional protein. Their nutritional needs are the same, but extra care may be needed to support coat and skin health.
Social Behavior and Daily Activities
Rex rats are typically gentle, playful, and outgoing. They are highly interactive and bond closely with owners and cage mates. As with all rats, they do best when housed with at least one companion. Their activity peaks during dusk and dawn, and they benefit from toys and challenges to stay mentally active.
