Hairless Rat

Scientific NameRattus norvegicus
Common NameHairless Rat
Care LevelIntermediate to Advanced
Lifespan2-3 years
Adult Size9-12 inches (including tail)
OriginGenetic mutation from the common Norway rat
TemperamentSocial, Intelligent, Gentle

History & Domestication

The Hairless rat, known scientifically as the Rattus norvegicus, is a product of a specific genetic mutation in the common Norway rat. While the natural habitat of the Norway rat spans many parts of the globe, the Hairless variant’s existence is primarily attributed to controlled breeding in laboratory settings. Over the past few decades, this rat, originally bred for scientific purposes, became increasingly popular as a pet due to its peculiar appearance and the intrigue it generated.

While the exact timeline of their transition from labs to homes is murky, it’s widely believed that scientists and lab workers, growing fond of their hairless test subjects, began adopting them. Their domestication was likely spurred by these enthusiasts who saw past the rat’s lab origins and valued them as the unique, endearing creatures they are.


Hairless rats generally measure between 9 to 12 inches in length from snout to tail tip when fully grown. As with other rat breeds, the males are often larger and more robust than their female counterparts. It’s interesting to note that, despite their lack of fur, Hairless rats maintain roughly the same dimensions as their furred relatives.


Typically, with optimal care, a Hairless rat can expect to live between 2 to 3 years. While this lifespan mirrors that of other rat breeds, it’s essential to remember that due to their lack of fur, Hairless rats can be more susceptible to various health issues which may impact their lifespan.


Breeding Hairless rats is an intricate process. The hairlessness is due to a recessive gene, meaning that both parents must carry the trait to produce Hairless offspring. When two Hairless rats are bred, they can produce Hairless kittens, but also face higher chances of complications during pregnancy and birthing, as well as issues related to the newborns’ health and vitality.

Unique Features

The most striking feature of the Hairless rat is, undoubtedly, its lack of fur. This gives the rat a smooth, almost rubbery texture and reveals physical features like wrinkles and skin folds that are typically hidden in furred rats. Additionally, Hairless rats have whiskers that are often curly and may appear shorter than those of their furry counterparts due to their tendency to break or curl up.

Behavior and Temperament

Despite their unique appearance, Hairless rats share the same behavioral characteristics as other domesticated rat breeds. They are social animals that thrive on interaction, both with other rats and their human caregivers. Their intelligence and curious nature make them engaging pets, always ready to explore their surroundings and even learn tricks.


The sensitive skin of Hairless rats requires careful handling. Without the protective barrier of fur, they are more prone to cuts, scratches, and abrasions. It’s essential to have clean hands and be gentle when holding them. Despite their vulnerability, they are as eager as any rat to bond with their owners and can become very affectionate over time.

Grooming Needs

While Hairless rats don’t require brushing like their furred counterparts, their grooming needs are unique. Without fur, they have no shield against natural body oils, which can accumulate on their skin. This necessitates regular baths with mild soap to prevent the buildup of oils and potential skin issues. Monitoring their skin for any signs of dryness, irritations, or infections is essential.

Diet & Nutrition

Hairless rats, being of the same species as common fancy rats, have a similar omnivorous diet. They thrive on a combination of high-quality rat pellets, fresh fruits, vegetables, and occasional protein sources like cooked eggs or lean meat. As always, constant access to fresh water is imperative.


Hairless rats are more sensitive to environmental temperatures due to their lack of insulating fur. Ideally, their living space should be kept between 70°F and 75°F. They should be protected from direct drafts, sudden temperature changes, and direct sunlight. During colder months, providing extra bedding or a small blanket can help them stay warm.

Common Health Issues

Hairless rats face many of the same health concerns as other rats, including respiratory infections, tumors, and dental issues. Their exposed skin adds an additional layer of potential problems, including dry skin, rashes, and cuts. Regular veterinary check-ups and monitoring at home are crucial for early detection and treatment of any health concerns.

Habitat Requirements

A spacious, well-ventilated cage is essential. Given their vulnerability to temperature changes, their habitat should be placed in a stable environment away from direct sunlight or drafts. Inside the cage, soft bedding is crucial. Paper-based bedding or aspen shavings are usually recommended. Toys, climbing structures, and hiding spots further enrich their habitat.

Cost of Care

Initial adoption or purchase costs for Hairless rats may be slightly higher than their furred counterparts due to their unique nature. Ongoing care expenses include their habitat, food, toys, and bedding. Due to their unique skin and potential related health issues, owners might also face slightly elevated veterinary costs. As always, investing in their well-being upfront can lead to fewer long-term expenses and a happier, healthier rat.

Hairless Rat FAQs (Frequently Asked Questions)