Manx Rat

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

History & Domestication

The Manx Rat, an interesting variant of the Rattus norvegicus, derives its name from the similarly tailless Manx cat. It is characterized by a genetic mutation that results in a shortened tail or, in some instances, no tail at all. Originally, the Manx rat was likely an unintended result of breeding among the common Norway rat population.

The rat community quickly took a shine to this unique variation, and it wasn’t long before breeders began to selectively breed for the trait, turning a spontaneous mutation into a sought-after characteristic. These tailless wonders transitioned smoothly from a surprising rarity to a beloved pet, much adored for its unusual appearance.


Fully grown Manx rats typically measure between 9 to 11 inches, not including their tail – or lack thereof. Their size is comparable to other fancy rats, with males usually being somewhat larger than females. Despite the lack of a tail, the Manx rat’s body structure is robust and well-proportioned.


Manx rats share a similar lifespan with other domesticated rat breeds, averaging between 2 to 3 years. As with any pet, their lifespan can vary based on factors such as genetics, diet, environment, and overall care. Regular check-ups and a healthy lifestyle can potentially extend their life.


Breeding Manx rats requires a careful understanding of genetics. Since the tailless trait is a mutation, not all offspring from two Manx rats will necessarily be tailless. It’s also worth noting that breeding two rats with very short tails can lead to spinal problems in the offspring. Therefore, breeders often mate a Manx rat with a tailed rat to reduce the chances of severe genetic issues.

Unique Features

The most defining feature of the Manx rat is its shortened or completely absent tail. This gives them a distinctive appearance compared to other rats. Due to the genetic mutation, some Manx rats might also have other unique features or physical quirks, but the tail remains the primary identifier.

Behavior and Temperament

Behaviorally, Manx rats are much like their tailed counterparts. They’re intelligent, curious, and social creatures, enjoying the company of both their human caregivers and fellow rats. They are playful and can often be seen engaging in typical rat antics, scampering about, and exploring their surroundings.


Manx rats are as amenable to handling as any other rat breed. They are generally friendly and, with regular gentle handling from a young age, can become very affectionate towards their owners. It’s important to be gentle and supportive when holding, ensuring not to put any unnecessary strain on their back, especially given their unique spinal structure due to the absence of a tail.

Grooming Needs

Manx rats require minimal grooming, similar to other rat breeds. Regularly checking their ears, teeth, and nails remains essential. A soft cloth can be used to wipe them down if they become dirty. Bathing is rarely required, and when it is, using a mild rat-safe shampoo is recommended.

Diet & Nutrition

Manx rats thrive on a balanced diet similar to other rat breeds. A mix of high-quality rat pellets complemented by fresh fruits and vegetables makes for an ideal diet. Occasional treats, such as cooked eggs, seeds, or lean meat, can also be offered. As always, clean and fresh water should be readily available.


Manx rats are comfortable in typical room temperatures ranging from 65°F to 75°F. It’s vital to keep their environment stable, away from direct sunlight, drafts, or abrupt temperature fluctuations. Providing them with soft bedding and nesting materials ensures they can stay warm and cozy.

Common Health Issues

In addition to the standard health concerns that all rats face, Manx rats have some unique considerations due to their genetic mutation. Spinal issues can be a concern, given the tail’s role in a rat’s balance and mobility. Regular veterinary check-ups are crucial to detect and address any potential health issues early on.

Habitat Requirements

A spacious, well-ventilated cage is a must for Manx rats. Vertical space with climbing opportunities is appreciated, but care should be taken to ensure that there are no areas where a rat might fall and injure itself. Soft bedding like paper-based products or aspen shavings are ideal for comfort.

Cost of Care

The initial cost of purchasing or adopting a Manx rat might be slightly higher than standard fancy rats due to their unique appearance. The subsequent costs associated with food, bedding, toys, and health care are on par with those of other rat breeds. Investing in regular health check-ups and a nutritious diet can minimize potential future health-related expenses.

Manx Rat FAQs (Frequently Asked Questions)