When a female praying mantis bites the head off her sexual partner, it is probably not out of anger.
A new study shows that male sparrows can judge if a spouse is prone to infidelity, providing less food for their brood if their partner is unfaithful.
Promiscuity could reduce benefits of successful mating, research shows.
Females have more sexual partners when they live in colder climates and are happier being monogamous when it is hotter, a study into the behavior of insects has found.
Female fruit flies with a large number of sexual partners are playing an invaluable role in preventing the extinction of males, research at the University of Liverpool has shown.
Experts at Edinburgh Zoo in Scotland have begun daily check-ups of Britain's only female giant panda Tian Tian and male partner, Yang Guang, the zoo announced on Monday.
Women are up to 83 percent more likely to experience repeat abuse by their male partners if a weapon is used in the initial abuse incident, according to a new study that has implications for victims, counselors and police.
One of South Africa's two polar bears has died at the Johannesburg Zoo, leaving its mate now believed to be the only polar bear in Africa, a veterinarian said Wednesday.
When walking with female romantic partners, males tend to slow down by about 7%, according to new research published Oct 23 in the open-access journal PLOS ONE, by Cara Wall-Scheffler and colleagues at Seattle Pacific University.
Male fruit flies like to have a variety of sexual partners, whereas females prefer to stick with the same mate – or move on to his brothers.