Research overview: scent marking and territorial communication

Cats use a suite of scent marks to communicate about territory, identity, and reproductive status, often without direct contact between individuals. This overview surveys how urine spraying, facial rubbing, scratching, and other deposits together form a chemical communication network that lets cats share information across time. A cat encountering another's mark can learn who passed by, when, and perhaps their reproductive state, allowing solitary or loosely social cats to coordinate and avoid conflict. The survey relates territorial marking to the detection systems, olfactory and vomeronasal, that read the signals and to the specific chemistry of the different marks. It frames scent marking as a primary social medium for a species that often lives without constant face-to-face interaction. Understanding territorial communication shows how cats maintain a structured social and spatial order through chemistry, leaving and reading messages that organize their use of shared space.