The key ingredients in their sex-induced love potion are two hormones: oxytocin and vasopressin.During and after having sex, prairie voles get hormonally addicted to their partner, leading to a stable co-parenting arrangement. Because oxytocin and vasopressin also play a role in human love and attachment, scientists have been interested in prairie vole relationships, and have conducted experiments to test the role of these hormones in monogamy.Blue whales () are found worldwide, with different regional populations forming distinct subspecies.Scientists believe they reach sexual maturity between 5 and 15 years of age, and have a gestation period that lasts 10 to 12 months.Apeldoorn researchers recently launched an experiment with a few lucky orangutans. The biggest hurdle so far is finding touchscreens that can survive the frustrations of the dating app process; one we all know far too well.In the Tinder-like dating game, apes swipe through pictures of prospective ape boyfriends and girlfriends and decide which ones they're into. The goal of the program is to figure out an ape's mate preference to increase the likeliness of a successful match during mating season. Soon after the experiment kicked off, one ape lady called Samboja smashed the tablet displaying the dudes.
A complementary experiment studied the meadow vole – the prairie vole’s doppelganger and close relative – a species that is normally promiscuous.In 2002 the sex therapist Hani Miletski published Understanding Bestiality and Zoophilia, a book based on her study of almost 100 zoophiles — research that led her to conclude that many form deep, loving, and very nurturing relationships with their animal partners.While it’s certainly not a homogeneous community, many “zoos” (as they are known to self-identify) are monogamous and live with their animals as if they were human partners.Bestiality, the act of having sex with an animal, tends to conjure images of a mucky, socially inadequate, desperate farmer sneaking into the barn after dark, or depraved groups of thrill-seekers forcing sex with drugged, abused, or otherwise mistreated animals (like the case of Douglas Spink and the animal-sex-tourism farm in Washington State).But the sexual identity that can be attached to bestiality, zoophilia, remains little understood.