Castrated loses mane lion

Mane represents "masculinity" of male lions. Lionesses always prefer the Cavaliers with the thick, very lush mane as its luxury points to increased male fertility.

Apparently, the mane is directly related to the sexual organs of a lion: when he castrated (which sometimes happens in captivity), full mane falls. Lion without a mane becomes like - oh, the shame! - On a lioness; and the fact that the mane is growing back again, it takes at least six months.

via factroom.ru