Meaning of the word "female of the species is more deadly than the male" in English

What does "female of the species is more deadly than the male" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

female of the species is more deadly than the male

US /ˈfiːmeɪl əv ðə ˈspiːʃiːz ɪz mɔːr ˈdedli ðæn ðə meɪl/
UK /ˈfiːmeɪl əv ðə ˈspiːʃiːz ɪz mɔː ˈdedli ðæn ðə meɪl/
"female of the species is more deadly than the male" picture

Idiom

a proverb suggesting that women or female animals can be more dangerous, aggressive, or ruthless than their male counterparts

Example:
She may look harmless, but remember that the female of the species is more deadly than the male.
In many spider species, the female of the species is more deadly than the male, often eating him after mating.