 Since the Kzinti have bred intelligence out of their own females, an inexperienced Kzin is sometimes careless enough to leave human females to their own devices, usually with fatal results to that particular Kzin.It has been further described in the novels that a combat-trained human female is a Hero's worst nightmare.The Kzinti term for any particularly competent human female soldier is "Manrret" (singular) or "Manrretti" (plural), so named out of a sense of gallows humor regarding lethal encounters with same.