thumb|Black tortoiseshell "stumpy" female
The Cymric ( , ) is a Canadian cat breed. Some cat registries consider the Cymric a semi-long-haired variety of the Manx breed, rather than a separate breed. Except for the length of fur, in all other respects, the two varieties are the same, and kittens of either sort may appear in the same litter. The name comes from Cymru (), the indigenous Welsh name of Wales, even though the breed is not associated with Wales. The name may have been chosen to provide a "Celtic" sounding moniker for the breed. While the breed's Manx bloodline originated from the Isle of Man, the long-haired variant is claimed to have been developed in Canada. The breed is called the Longhair Manx or a similar name by some registries.
History
According to the Isle of Man records, the taillessness trait of the Manx (and ultimately the Cymric) began as a mutation among the island's domestic cat population. Given the island's closed environment and small gene pool, the dominant gene that decided the cats' taillessness was easily passed from one generation to the next, along with the gene for long hair. Long-haired kittens had been born to Manx cats on the Isle of Man, but had always been discarded by breeders as "mutants". Then, in the 1960s, similar kittens were born in Canada and were intentionally bred. This was the start of the increase in Cymric popularity. It took many years for cat associations to recognise the Cymric as a breed of its own. While the Manx was recognised in the 1920s, the Cymric was not shown until the 1960s and did not gain popularity until the mid-1970s.
The Fédération Internationale Féline (FIFe, since 2006), World Cat Federation (WCF), Canadian Cat Association (CCA-AFC), Australian Cat Federation (ACF), New Zealand Cat Fancy (NZCF), Southern Africa Cat Council (SACC), American Cat Fanciers Association (ACFA, of the US East Coast), and Cat Fanciers' Federation (CFF, in the US Northeast) consider the Cymric a separate breed. The Cat Aficionado Association (CAA) of China does also, by virtue of the CAA having adopted all the breed standards of its Western partner, ACFA; it is unknown if any Cymric breeders are actually in China.
The International Cat Association (TICA) recognises the Cymric as a variety of Manx, not a separate breed with its own standards. Also, simply covering it in their Manx breed standards, the US-based Cat Fanciers' Association (CFA), the Co-ordinating Cat Council of Australia (CCCA), and the UK's Governing Council of the Cat Fancy (GCCF) recognise the variety as the long-haired Manx rather than a Cymric (the CFA but recognised it as a separate breed (Cymric) at the beginning of 2015, using the GCCF Manx standard (aside from coat length). Males of this Canadian cat breed can weigh up to , while, female usually weigh between . They have a rounded appearance and their front legs are shorter than their hind legs. In the show ring, the quality of a cat's coat has greater significance than its colour or markings,
- Longies In other international registries, such cats are designated "Tailed Cymric" or "Tailed Manx Longhair", only recognised as breeding stock (they are important as such, since breeding two tailless Manx or Cymrics together results in birth defects), and cannot be show cats. A rabbit-like hop can sometimes be seen in Cymric cats due to the spinal deformity. Most of the time, these problems are identified before six months of age. Since these kittens make up about 25 percent of all kittens, litters are usually small. Even cats who inherit only one copy of the gene can have what is called Manx syndrome. Not every Cymric with a short spine has problems or Manx syndrome. It is simply an attribute of the Manx gene, and its expression cannot be entirely prevented.
Following updated genetic research, both the ACF and (less stringently) the GCCF impose special breeding restrictions on Manx cats (including the Cymric, however named and classified), for animal welfare reasons.