Question: What characteristic of Munchkin cats is due to osteochondrodysplasia?

Context articles: Skookum cat
Frakk
Felidae
Feline odontoclastic resorptive lesion
Boomerang dysplasia
Dwarf cat
Munchkin cat
Ragdoll
Manx cat
VG Cats

Skookum is the name of a breed of cat.
 .
 It is a small, short-legged cat, very similar to a related breed called the Munchkin, but with curls similar to its other parent breed, the LaPerm.
 Its head is a broad modified wedge shape with rounded contours and medium large walnut shaped eyes.
 The head shows no extremes of features, but the eyes are large for its head and expressive.
 The neck and body are moderate in type but thickish with a rounded chest and good solid musculature structure.
 The body should not appear elongated, but tends slightly more towards cobby type.
 The short yet well proportioned legs have medium boning.
 The upper and lower forelegs are approximately even in length, as are the thighs and lower legs of the slightly longer hind legs.
 The feet are well rounded and compact and well planted.
 The coat is the result of the LaPerm gene so has a similar soft light airy texture.
 It should not be overly thick and should stand away from the body on fuzzy ringlets and curls or waves.
 The curls should not ripple close to the body but should spiral randomly out away from the skin.
 They can be long haired or short haired and the short coated variety has a coat which is closer to the body but still springy in feel.
 Regardless of hair length the Skookum should have very prominent curled whiskers and eyebrows.
 They are fun loving and kittenish cats, playful and athletic and fond of jumping and climbing.
Frakk is a Hungarian fictional cartoon character and star of the cartoon television show, Frakk, a macskák réme (lit.
 "Frakk, terror of the cats").
 Frakk is a dog living his life with a typical, sometimes ironically depicted family.
 Frakk shares a home with Uncle Charles (Károly bácsi) and Aunt Irma (Irma néni), two Hungarian pensioners along with their two cats, Lucretia and Serena, one of them black and the other white.
 Due to an old rivalry, the three constantly get into fights which are exacerbated by the strict attitude of Aunt Irma, who favors the two cats as opposed to Uncle Charles, who takes the dog's side.
The biological family Felidae is a lineage of carnivorans that includes the cats.
 A member of this family is also called a felid.
 The characteristic features of cats have evolved to support a carnivorous lifestyle, with adaptations for ambush or stalking and short pursuit hunting.
 They have gracile and muscular bodies, strong flexible forelimbs and retractable claws for holding prey, dental and cranial adaptations for a strong bite, and often have characteristic striped or spotted coat patterns for camouflage.
 Cats are obligate carnivores, meaning they are dependent on nutrients in animal flesh for survival, and because of the large proportion of meat in their diet are sometimes referred to as hypercarnivores. Of the 13 terrestrial families in the order Carnivora, they are the strictest carnivores.
Feline Tooth Resorption (TR) is a syndrome in cats characterized by resorption of the tooth by odontoclasts, cells similar to osteoclasts. TR has also been called "feline odontoclastic resorption lesion" (FORL), neck lesion, cervical neck lesion, cervical line erosion, feline subgingival resorptive lesion, feline caries, or feline cavity.
 It is one of the most common diseases of domestic cats, affecting up to two-thirds.
 TRs have been seen more recently in the history of feline medicine due to the advancing ages of cats, but 800-year-old cat skeletons have shown evidence of this disease.
 Purebred cats, especially Siamese and Persians, may be more susceptible.
Boomerang dysplasia is a lethal form of osteochondrodysplasia known for a characteristic congenital feature in which bones of the arms and legs are malformed into the shape of a boomerang.
 Death usually occurs in early infancy due to complications arising from overwhelming systemic bone malformations.
A dwarf cat is any domestic cat which has the condition of dwarfism due to a genetic mutation.
 Unlike undersized cats of normal proportions, dwarf cats display symptoms of osteochondrodysplasia—genetic disorders of bone and cartilage, typically manifested as noticeably short legs.
The Munchkin is a relatively new breed of cat characterized by its very short legs, which are caused by a genetic mutation.
 Much controversy erupted over the breed when it was recognized by The International Cat Association in 1995 with critics voicing concern over potential health and mobility issues.
The Ragdoll is a cat breed with blue eyes and a distinct colourpoint coat.
 It is a large and muscular semi-longhair cat with a soft and silky coat.
 Like all long haired cats, Ragdolls need grooming to ensure their fur does not mat.
 Developed by American breeder Ann Baker in the 1960s, it is best known for its docile and placid temperament and affectionate nature.
 The name "Ragdoll" is derived from the tendency of individuals from the original breeding stock to go limp and relaxed when picked up.
 Particularly popular in both the United Kingdom and the breed's native United States, ragdoll cats often are known as "dog-like cats" or "puppy-like cats" due to behaviors such as their tendency to follow people around, their ease at being physically handled, and their relative lack of aggression toward other pets.
The Manx cat ( , in earlier times often spelled Manks), is a breed of domestic cat ("Felis catus") originating on the Isle of Man, with a naturally occurring mutation that shortens the tail.
 Many Manx have a small stub of a tail, but Manx cats are best known as being entirely tailless; this is the most distinguishing characteristic of the breed, along with elongated hind legs and a rounded head.
 Manx cats come in all coat colours and patterns, though all-white specimens are rare, and the coat range of the original stock was more limited.
 Long-haired variants are sometimes considered a separate breed, the Cymric.
 Manx are prized as skilled hunters, and thus have often been sought by farmers with rodent problems, and been a preferred ship's cat breed.
 They are said to be social, tame and active.
 An old local term for the cats on their home island is stubbin.
 Manx have been exhibited in cat shows since the 1800s, with the first known breed standard published in 1903.
VG Cats (short for "Video Game Cats") is a webcomic written and drawn by Canadian cartoonist Scott Ramsoomair.
 Published on its own website, it features the adventures of a pair of anthropomorphic cats, who often play the roles of characters in popular video games that are parodied in the strip.
 Strips are usually presented in a large format and in full color.
 The author generally set Mondays as days for updating the comic; however, the update schedule has a reputation of being incredibly sporadic; he frequently mocks his tardiness in updating in various strips due to personal reasons and frequent convention appearances.
 As of October 2016, the site had approximately 369 comics listed in its main archives.
 Based on this archive alone, "VG Cats" averaged 25 comics a year while it was at its peak.