Scientists have uncovered a possible chemical identification system in cat urine, built from a set of 13 unusual fatty acids. These compounds appear to form a long-lasting signal that cats could use to recognize one another, according to a study reported by ScienceDaily.
The fatty acids are also associated with unexplained lipid droplets found in kidney cells, hinting that these structures might play a role in producing or storing the signal. The findings suggest the mechanism could be common across the cat family, rather than unique to domestic cats.
Because the study relies on a single source, there is no independent perspective to compare. The discovery opens a new line of inquiry into how feline scent communication works at a chemical level, but further research would be needed to confirm the behavioral function.