Rudyard Kipling's Verse By Rudyard Kipling:
"...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"
A comment on the momma bear post brought Kipling up as a previous observation that there is something to mother's instinct that defies logic or expectations. Although Kipling's work does wax a bit dated, it bears out the same observation.