It is used for intra-species signalling, scent marking, and contributes to the strong odor of foxes in particular. Although it secretes a mixture of volatileterpenes similar to those produced by violets (hence the name), the chemicals are produced in much greater quantity than in flowers, and the resulting strong smell can be quite unpleasant.
^Deveaux, Renée Esther, Nachweis verschiedener Drüsentypen und mehrerer Hydroxysteroid-Dehydrogenasen im dorsalen Schwanzorgan (Supracaudal gland in dog & fox). D.V.M. thesis, Veterinary Medical Faculty, Bern University 1984
^Shabadash SA, Zelikina TI (1997). "The caudal gland in the cat is a hepatoid gland" [The caudal gland in the cat is a hepatoid gland]. Izvestiia Akademii Nauk (in Russian) (5): 556–70. PMID9410272.