Research overview: mane variation and its limited taxonomic value in lions

Lion manes vary enormously in size and color, from the dark, heavy manes once attributed to Barbary and Cape lions to the sparse manes of some East African and Asiatic lions. This overview examines why mane characters are unreliable for classification. It explains that mane development is strongly influenced by age, testosterone, climate, and individual condition, so it tracks environment and physiology more than ancestry. Historical taxonomists who named subspecies partly on mane traits often described individual or local variation rather than evolutionary units. The piece connects this to the broader caution against single-character felid taxonomy and to the reassessment of forms like the Barbary lion, whose distinctive mane did not signal deep genetic distinctiveness. Manes are spectacular but taxonomically weak.