Health
Early speculations that the Munchkin will develop spinal problems commonly seen in short-legged dog breeds did not materialize. In 1995 several Breeders had their oldest Munchkins X-rayed and examined for signs of joint or bone problems and no problems were found.
Two rare problems documented in the breed are lordosis (excessive curvature of the spine) and pectus excavatum (hollowed chest), although actual prevalence is not known. These conditions can appear in other breeds and some breeders have denied that it is a problem for the Munchkin. Small litter sizes when two munchkin cats are crossed indicate that embryos that are homozygous for the munchkin gene are non-viable.
Although the genetic mutation causing the short-legged trait in Munchkins has been referred to as achondroplasia, it has not been proven that the trait is due to a gene at the same locus as causing achondroplasia in humans. Furthermore, while achondroplasia is typically associated with an enlarged head as well as short legs, this combination of features is not seen in Munchkin cats. The condition has sometimes been referred to as hypochondroplasia instead.
Read more about this topic: Munchkin (cat)
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