How is a hairless cat born? - briefly
A hairless cat is typically born with a full coat of fur, similar to other cats. The hairless trait is usually the result of a recessive gene, which means both parents must carry this gene for their offspring to be born without fur.
How is a hairless cat born? - in detail
The birth of a hairless cat, often referred to as a Sphynx, is an intriguing process that begins with genetics and continues through several stages of development.
Genetically speaking, the hairless trait in cats is caused by a dominant mutation in the KRT71 gene, which regulates the growth of hair follicles. This mutation leads to the underdevelopment or absence of hair follicles, resulting in a cat with little to no fur. The Sphynx breed originated from a spontaneous genetic mutation that occurred in a domestic shorthair cat named Prune, born in Toronto, Canada, in 1966. Since then, selective breeding has been used to perpetuate and refine this trait.
During pregnancy, the hairless gene does not affect the fetal development of the coat directly. Instead, the kittens are typically born with a fine down or fuzz covering their bodies. This initial coat is shed within the first few weeks after birth, revealing the smooth, wrinkled skin that Sphynx cats are known for. The absence of hair is not due to an inability to grow it but rather a result of the genetic mutation that prevents the development of normal hair follicles.
After birth, the kittens' bodies go through several phases of skin changes. Initially, their skin appears thin and delicate, often with a visible network of blood vessels beneath the surface. As they age, the skin thickens and becomes more resilient, developing a distinctive texture that is often described as being similar to chamois leather or soft suede. The lack of hair also exposes the cat's body heat more readily, which can make Sphynx cats feel warmer to the touch than other breeds.
In addition to their unique appearance, hairless cats require special care throughout their lives. Due to their exposed skin, they are susceptible to sunburn and need protection from direct sunlight. Regular bathing is also necessary to remove oils that accumulate on their skin, as these oils can cause staining on furniture and other surfaces. Despite these additional needs, many people find the companionship of a hairless cat to be well worth the effort.
In conclusion, the birth of a hairless cat involves a complex interplay of genetics and developmental stages. From the initial genetic mutation that causes the hairless trait to the postnatal shedding of their fine down, the process is both fascinating and intricate. Understanding these details provides insight into the unique characteristics and needs of these remarkable felines.