The Female of... is more deadly than the male
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The Female of the species is more deadly than the male : Phrases
A well-known line from Rudyard Kipling's poem The Female of the Species, 1911:
When the Himalayan peasant meets the he-bear in his pride,
He shouts to scare the monster, who will often turn aside.
But the she-bear thus accosted rends the peasant tooth and nail.
For the female of the species is more deadly than the male.