Females choose mates with beautiful tails,or in the case of lions,with big,black manes,because it turns them on.

• 雌性孔雀通常会选择有漂亮尾巴作为配偶，而母狮子则选择有浓黑鬃毛的雄狮，因为这样的鬃毛能刺激它们在交配过程中感到兴奋。