Aurochs were the ancestors of domestic cattle, believed to finally have become extinct about 400 years ago:「A feature often attributed to the aurochs is blond forehead hairs. Historical descriptions tell that the aurochs had long and curly forehead hair, but none mentions a certain colour for it.」
　　[　https://en.wikipedia.org/wiki/Aurochs 2013-07-19　]　
　Aurochs were far more aggressive than remaining breeds of domesticated cattle. The eventual victor of the male battles during mating season won a harem of females all in estrus, impatiently awaiting his arrival with their reward. Females also battled one another for the right to be nearer the front of the line.
　A large obese animal kept for meat with YELLOW HAIR and BLACK LIPS also describes a SYPHILITIC OBESE SERVICE PROVIDER OR CONCUBINE:「The irregular moth-eaten type of alopecia on the scalp seen in secondary syphilis resembles the diffuse pattern of hair loss of patchy alopecia areata. The type of hair loss seen in essential syphilitic alopecia occurs without any cutaneous signs of syphilis and mimics the diffuse hair loss as seen in telogen effluvium.」
　「Syphilis pathology: Microscopic examination of an area of patchy or diffuse alopecia in a patient with secondary syphilis reveals an inflammatory, non-scarring alopecia. Follicular changes include a decrease in the percentage of hairs in the anagen (active) phase and a corresponding increase in catagen (transitional stage of hair cycle) and telogen (resting phase of hair cycle) hairs. The infiltrate is described as a sparse, predominantly peribulbar, lymphocytic, superficial perivascular infiltrate with scattered plasma cells and fibrous tract formation.」
　「In histologic examination of the scalp alopecia of lues maligna, the nodulo-ulcerative form syphilis, the entire dermis shows a perivascular, lymphohistiocytic infiltrate with epithelioid histiocytic granulomata. In the center of the dermis, there is a zone of degenerated collagen and an infiltrate consisting of lymphocytes, histiocytes, neutrophils, and fragmented nuclear particles. This pattern follows vessels that show varying degrees of degeneration and necrosis of vessel walls.」
　　[　link now-dead was http://www.keratin.com/aq/aq010.shtml 2015-03-16;　see instead　https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3690623/　2023-05-17　]　

Modern definitions (that generally disregard history) …excluding politically incorrect concepts and other meanings deemed offensive today; may list only pigeonholed definitions, euphemisms, or meaningless mnemonics)
Unihan extended: an ox with yellow hair and black lips
EDRDG: ox with yellow hair and a black head