Cymric: the tailless Manx in a long coat, with all the same genetics

The Cymric (the name comes from Cymru, the Welsh word for Wales, a nod to the mythic Celtic ties of the Isle of Man) is, in plain terms, a Manx in a longer coat. It appears when two Manx cats that both carry a recessive long-hair gene are bred together. That recessive likely entered the line through historical crosses with semi-long-haired cats, and when two carriers meet, some kittens arrive with a soft, semi-long coat and the same hallmark: an absent or shortened tail.

The naming has never been settled. The CFA registers it as the longhair division of the Manx, not a separate breed. TICA and several other registries list it as its own breed under the name Cymric. The paperwork argument changes nothing about the animal: genetically, this is a Manx with a semi-long coat, full stop.

That matters because the Cymric inherits the entire Manx health load, including the well-documented condition known as Manx syndrome. Anyone seriously considering one should understand the underlying genetics first, because the coat is the only thing that is actually different.

Where the tail goes, and why it matters

The taillessness is not a cosmetic quirk. It comes from a dominant mutation in the T-box (Brachyury) gene, the same one that shapes the spine in early development. A kitten that inherits two copies of the mutation does not survive to birth, so every living Cymric carries one mutant copy and one normal copy. That single mutation is what shortens or erases the tail, and in some cats it reaches further up the spine.

Breeders classify the tails the same way they do in the Manx:

Rumpy: no tail at all, a small dimple where it would start.
Rumpy-riser: a few fused vertebrae you can feel as a small rise.
Stumpy: a short, often kinked stub.
Longy (or tailed): a tail close to normal length.

How a Cymric differs from a classic Manx

Only the coat. Everything else is identical:

Semi-long coat instead of short.
More frequent brushing, 2-3 times a week instead of once.
Same cobby, rounded body with a broad chest and short back.
Same longer hind legs than front, which give the rabbity, hopping gait.
Same range of tail types (rumpy, rumpy-riser, stumpy, longy).
Same Manx syndrome at the same frequency.

What its temperament is actually like

Identical to the Manx, and it is one of the breed's genuine selling points. Cymrics are sociable, playful, even-tempered, and quiet. They are the kind of cat that follows you from room to room, learns routines quickly, and tends to bond closely with the household rather than fixating on one person.

Two traits stand out. First, they are vocally discreet. When they do talk, it tends to be a soft chirp or trill rather than a loud meow. Second, breeders often describe a dog-like attachment: they greet people, play fetch with small toys, and integrate well with calm dogs and other cats if introductions are gradual.

Three things to keep in mind before adopting:

Active but not frantic. Medium-high energy. They want play and climbing, not constant stimulation.
They like company. Long stretches alone every day wear on a social cat over time.
Mobility can vary. In cats with any expression of Manx syndrome, jumping and litter-box habits may be affected, which shapes how you set up the home.

What hereditary health issues it has

This is the part a responsible breeder addresses directly, because the defining trait of the breed is also its main liability.

Manx syndrome. The same Brachyury mutation that removes the tail can disrupt the lower spine and spinal cord. The cluster of problems is grouped under this name and can include spina bifida, a fused or shortened spine, megacolon (chronic constipation), urinary and fecal incontinence, and hind-limb mobility defects. Estimates vary, but a meaningful share of affected lines, commonly cited around 20-30%, show some expression. Signs usually appear in the first months of life, which is why ethical breeders wait until kittens are roughly 4 months old before placing them, so problems have time to surface.

Hypertrophic cardiomyopathy (HCM). The most common feline heart disease, in which the heart muscle thickens and circulation suffers. It is the leading cause of sudden cardiac death in many breeds. Screening of breeding stock by echocardiogram, plus genetic testing where a validated test exists, lowers the risk.

Hip dysplasia. Uncommon in cats generally but documented in cobby, heavy-boned breeds like this one. OFA-style radiographic screening is reasonable in breeding cats.

Corneal dystrophy. Reported in the Manx and Cymric, a clouding of the cornea that can appear in young cats. Diagnosed on routine eye exam.

Average life expectancy is 10-14 years. A Cymric free of Manx syndrome and well cared for can live at the upper end of that range comfortably.

Does the Cymric need a lot of grooming?

Moderate, and less than the coat suggests. The double coat is only moderately dense, so it does not mat as aggressively as a Persian's:

Brushing 2-3 times a week with a deshedding brush or wide-tooth comb for long-haired cats.
Daily brushing during seasonal sheds in spring and fall.
Attention to the rear and the "skirt" at the hind legs, where tangles start.

For cats with any urinary or fecal incontinence, the area under the tail (or where the tail would be) needs regular checking and cleaning to prevent skin irritation.

Does it adapt well to apartment life?

Yes. The Cymric is genuinely apartment-friendly: medium size, calm voice, and a sociable streak that suits indoor life. One adjustment matters. If a cat shows any expression of Manx syndrome, build in stepped, low-rise access to height (a series of shelves or a tiered cat tree rather than one tall leap) and choose a low-entry litter box to make elimination easier. A water fountain and a few interactive toys cover the rest.

How much does a Cymric cost in the United States?

A pedigreed kitten from a TICA- or CFA-registered breeder with health-screened parents and proper early socialization typically runs $700 to $1,500 in 2026, occasionally higher for show lines. The breed is uncommon in the U.S., and many cats trace back to Canadian lines, where the longhair variety was first consolidated.

Be wary of bargain kittens with no documentation. With a breed defined by a spinal mutation, the parents' health history and an ethical placement age (around 4 months) are not optional extras. Shelters and breed-specific rescues occasionally have Manx or Cymric cats, and adoption is a sound route for anyone who simply wants the temperament without breeding ambitions.

Cymric data sheet

Identification

Size: medium, cobby build
Weight: 8-12 lb males / 5.5-10 lb females
Length: 14-18 in including any tail
Life expectancy: 10-14 years
Origin: Isle of Man; longhair variety consolidated in Canada

Physical

Coat: semi-long, silky, moderate double coat
Tail: absent (rumpy), short (stumpy), or near-normal (tailed)
Hind legs: longer than the front, producing a hopping gait
Body: round, cobby, broad-chested

Temperament

Sociability: high with humans and other pets
Vocalization: quiet, soft chirps and the occasional trill
Trainability: medium to high; learns cues and games readily

Care

Brushing: 2-3 times a week; daily during shed
Home setup: stepped access to height, low-entry litter box if syndrome is present
Diet: balanced premium cat food, ration adjusted to keep a lean build

Is this breed for you?

Yes, if you want a friendly, quiet, dog-like cat that fits apartment life and you are willing to learn about Manx syndrome and buy from a breeder who screens and places kittens responsibly. The temperament is genuinely rewarding.

No, if you are shopping on price alone, expect a tail, or are not prepared for the possibility of a cat with mobility or continence needs. This is a breed where the buyer's homework directly affects the animal's quality of life.

Frequently asked questions

Is it the same as a Manx? Genetically, yes. The only difference is the semi-long coat.

Does it have Manx syndrome? It can. It carries the same hereditary spinal risk at the same frequency. Signs usually appear in the first months, which is why ethical breeders place kittens later than usual.

Why are some Cymrics tailless and others not? A single dominant mutation controls it, and its effect varies. The same litter can include rumpy, stumpy, and tailed kittens.

Is it recognized as its own breed? TICA and several registries list the Cymric as a breed; the CFA registers it as the longhair division of the Manx. Both views describe the same cat.

How long does it live? 10 to 14 years, toward the upper end when free of Manx syndrome.

Is it good in an apartment? Yes. Medium size, quiet voice, and sociable. Add stepped access to height and a low-entry litter box if needed.

Bibliography

The International Cat Association (TICA), Cymric/Manx judging criteria and registry. https://tica.org
The Cat Fanciers' Association (CFA), Manx Breed Standard, longhair division. https://cfa.org
Buckingham, K.J. et al. (2013). Multiple mutant T alleles cause haploinsufficiency of Brachyury and short tails in Manx cats. Mammalian Genome, 24(9).
American Veterinary Medical Association, clinical resources on feline spina bifida and hypertrophic cardiomyopathy.
Royal Veterinary College, VetCompass studies on hereditary disease prevalence in cat breeds.