Tailless Rat

Scientific NameRattus norvegicus
Common NameTailless Rat
Care LevelIntermediate
Lifespan2-3 years
Adult Size9-11 inches (excluding tail)
OriginGenetic mutation from the common Norway rat
TemperamentSocial, Intelligent, Playful

History & Domestication

Tailless rats, also commonly referred to as Manx rats, are a distinctive variant of the Rattus norvegicus. Their defining characteristic is the absence of a tail due to a genetic mutation. The origin of this mutation is believed to have occurred spontaneously within the common Norway rat populations.

When first discovered, these rats intrigued breeders and pet enthusiasts alike, leading to selective breeding to promote and preserve the tailless trait. Over time, the tailless rat gained recognition and became a preferred choice among rat enthusiasts, transitioning from an unusual mutation to a sought-after pet variety.


Adult tailless rats typically measure between 9 to 11 inches, notably without the tail length factored in. Males are generally slightly larger than females. The body of the tailless rat is well-built and sturdy, with their overall physique resembling the common Norway rat, minus the tail.


The average lifespan of a tailless rat is between 2 to 3 years, which is consistent with other domesticated rat breeds. Factors such as genetics, care, diet, and living conditions can influence this range. Proper veterinary care and a suitable living environment can promote longevity in these rats.


Breeding tailless rats is a meticulous process, requiring an understanding of their genetics. Not all offspring of two tailless rats will inherit the tailless trait. To avoid potential genetic complications, breeders often pair a tailless rat with a tailed one. This mix reduces the risk of severe genetic issues and ensures healthier litters.

Unique Features

The glaring unique feature of the tailless rat is, as the name suggests, its absence of a tail. This genetic mutation makes them stand out from other rat breeds. While the tailless trait is the primary distinguishing feature, some tailless rats might also exhibit other minor unique physical characteristics or quirks.

Behavior and Temperament

Despite their physical differences, tailless rats share behavioral traits with their tailed counterparts. They are known for their high intelligence, inquisitive nature, and sociability. They interact well with their human caregivers, fellow rats, and can be seen exploring and playing, showcasing their lively personalities.


Handling tailless rats is much like handling any other rat breed. Regular and gentle interactions from a young age make them more sociable and accustomed to human touch. Due to their lack of tail and the associated balance challenges, it’s essential to support their bodies properly to avoid any strain or injury.

Grooming Needs

The grooming requirements for tailless rats are relatively minimal. A periodic check of their ears, teeth, and nails is sufficient. If they appear dirty, they can be gently wiped down with a damp cloth. Full baths are rarely necessary, but when required, using a mild rat-approved shampoo is advised.

Diet & Nutrition

An omnivorous diet, comprising high-quality rat pellets supplemented with fresh fruits, vegetables, and occasional protein sources like lean meats or cooked eggs, is ideal for tailless rats. Fresh water should always be accessible to them. It’s important to monitor their diet closely to ensure they maintain an optimal weight.


Tailless rats prefer consistent room temperatures, ideally between 65°F to 75°F. Their environment should be free from direct sunlight and drafts. A stable temperature is vital for their health and comfort. Providing nesting materials and cozy hideouts can also help them regulate their body temperature.

Common Health Issues

Tailless rats, due to their genetic mutation, can be more susceptible to spinal problems, a consequence of lacking a tail which plays a role in a rat’s balance and skeletal structure. Regular vet check-ups can help identify and treat potential health issues before they become severe.

Habitat Requirements

A spacious and ventilated cage is crucial for tailless rats. While they enjoy climbing, it’s essential to ensure the cage design minimizes fall risks. Bedding made from paper products or aspen shavings provides comfort and helps in absorbing waste.

Cost of Care

The initial cost for tailless rats might be slightly higher than common rat breeds due to their unique nature. However, recurring expenses for food, bedding, toys, and medical care are comparable to other rat varieties. Regular health check-ups and a balanced diet can mitigate potential health-related costs in the future.

Tailless Rat FAQs (Frequently Asked Questions)