What is the name of the fold on a cat's belly? - briefly
The name of the fold on a cat's belly is called the "primordial pouch." This feature is a remnant from their ancestral past and is not unique to cats, but also found in other mammals such as dogs and horses.
What is the name of the fold on a cat's belly? - in detail
The distinct skin fold on a cat's belly, often referred to as the "primordial pouch," serves several purposes in feline anatomy and behavior. This fold is located between a cat's rear legs and extends toward its groin area. It is a remnant of the marsupial-like structure that ancestral cats possessed, allowing them to carry their young safely during locomotion. While modern domestic cats do not use this pouch for carrying kittens, it remains a vestigial trait from their evolutionary history. Additionally, the primordial pouch can provide extra skin and fat for protection when cats are startled or feel threatened, giving them an added layer of defense during sudden movements. Understanding this feature offers insight into both the biological heritage and adaptive behaviors of our feline companions.