The Structure of the Cornified Claw Sheath in the Domesticated Cat (Felis Catus): Implications for the Claw-Shedding Mechanism and the Evolution of Cornified Digital End Organs

The study examined the structure of the cornified claw sheath in domesticated cats to understand the claw-shedding mechanism and the evolution of cornified digital end organs. Researchers found that the claw sheath is composed of multiple layers of keratinized cells, which facilitate the shedding process, maintaining sharp claws essential for the cat's survival. Using various imaging techniques, the study detailed the complex architecture of the claw sheath, including specialized structures that allow for the shedding of superficial layers without damaging underlying tissues. The findings provided insights into the evolutionary adaptations of feline claws and their specialized structures, contributing to the broader understanding of mammalian keratinized appendages.