Try as they might, these animals likely would win no awards for mating success this Valentine's Day.
Is an animal more likely to fight or make love? A new study identifies the fighters, the lovers and those who are in between.
Sex comes with risks, but a self-fertilizing animal on its way to extinction sheds light on why so many organisms reproduce by mating.
Some female animals consume male ejaculate, using the nutrients to fuel their own bodies as well as their eggs.
Why do female red squirrels mate with up to 14 males in a single day? Opportunity, research concludes.
Female cichlid fish seem to want heroes not zeros, according to researchers at Stanford University.