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Feb 14, 2014 07:00 AM ET // Jennifer Viegas
Try as they might, these animals likely would win no awards for mating success this Valentine's Day.
Jan 23, 2014 09:00 AM ET // Jennifer Viegas
Is an animal more likely to fight or make love? A new study identifies the fighters, the lovers and those who are in between.
Aug 6, 2013 07:00 PM ET // Jennifer Viegas
Sex comes with risks, but a self-fertilizing animal on its way to extinction sheds light on why so many organisms reproduce by mating.
Jun 4, 2013 07:00 PM ET // Jennifer Viegas
Some female animals consume male ejaculate, using the nutrients to fuel their own bodies as well as their eggs.
Dec 16, 2010 09:45 AM ET // Jennifer Viegas
Why do female red squirrels mate with up to 14 males in a single day? Opportunity, research concludes.
Nov 29, 2010 01:55 PM ET // Tim Wall
Female cichlid fish seem to want heroes not zeros, according to researchers at Stanford University.