Why does a Scottish cat have a hanging dewlap? - briefly
A Scottish Fold's distinctive hanging dewlap is a result of a genetic mutation that affects cartilage development, causing the ears to fold down and forward, and also affecting the shape of the lower jaw. This characteristic is unique to this breed and contributes to their recognizable appearance.
Why does a Scottish cat have a hanging dewlap? - in detail
The distinctive feature of a Scottish Fold, often referred to as a "hanging dewlap," is the result of a genetic mutation that affects cartilage development. This breed is known for its unique appearance, characterized by large, round eyes and ears that fold forward and downward, giving the cat an owl-like expression. The hanging dewlap, or loose skin on the neck and head, is not solely a cosmetic trait but rather a consequence of the same genetic mutation that causes the distinctive ear shape.
The gene responsible for this trait is a dominant gene, which means that only one copy of the gene is needed for the trait to be expressed. This gene affects the development of cartilage in the cat's body, leading to abnormalities not just in the ears but also in other areas where cartilage is present, such as the neck and face. The loose skin on the neck, or dewlap, is a direct result of this altered cartilage development.
Despite its unusual appearance, the hanging dewlap does not typically cause any health issues for Scottish Folds. However, breeders and owners must be cautious to avoid overbreeding, as inbreeding can lead to other genetic health problems such as Kidney Disease">polycystic kidney disease (PKD) and osteochondrodysplasia, a bone and cartilage disorder that can cause serious issues for the cat.
In conclusion, the hanging dewlap on a Scottish Fold is a direct consequence of the same genetic mutation that gives this breed its distinctive ear shape. While it does not cause health problems on its own, responsible breeding practices are essential to maintain the overall health and well-being of these unique cats.