part of part of in taxon Mammalia post-anal tail scent gland violet gland The violet gland or supracaudal gland is an important gland located on the upper surface of the tail of certain mammals, including European badgers and canids such as foxes, wolves the domestic dog, as well as the domestic cat. It is used for intra species signalling, scent marking, and contributes to the strong odor of foxes in particular. Wikipedia:Violet_gland UBERON:0013234 supracaudal gland