Behavior

Male serotine bats living in a Dutch church attic have been captured on camera engaging in marathon sessions of non-penetrative sex, while armed with a heart-shaped penis that's seven times longer than the female's vagina. Yes, this is a true story.

For the first time, scientists have found how our internal body clocks that govern the brain and skeletal system sync up, and upsetting this balance might contribute to injury and accelerate age-related bone and joint decline and disease.

A new study is offering one of the largest portraits to date of global smartphone use. Surveying thousands of people across nearly 200 countries the study found unexpected use patterns that challenge our current definitions for smartphone addiction.

A new study is shaking up the world of evolutionary biology by offering some of the first evidence of menopause in a wild, non-human primate population. The findings complicate pre-existing ideas around the evolutionary function of menopause.

During the European frog's 'explosive breeding' sessions, it's not uncommon to see multiple males pile on a single female. Now, they're fighting back, performing some Oscar-worthy acting to convince their pushy mates that the coupling is a dead end.

Believe it or not, male sexual desire actually begins in the brain. Scientists have found the neural circuit that triggers mating behaviors and the ensuing pleasure and reward feedback in mice. They hope it can lead to new drugs to treat dysfunction.

As coral reefs become increasingly decimated, predatory fish have fewer places to hide when stalking prey. A new study now suggests they're adapting, by using other fish as mobile hunting blinds.

Playing dead is a common defense mechanism in the animal kingdom, but scientists in Australia have discovered an example on a whole new scale. Entire colonies of ants were found to be feigning death, in a collective behavior never before recorded.

The myth that goldfish have only a three-second memory might sell short their mental capabilities. A new study shows some fish can recognize themselves in a photo, meaning they join a pretty exclusive club of animals known to have some self-awareness.

For half a century beta blockers have been used to help patients with cardiovascular problems manage their abnormal heart rhythms, but a new study tracking over a million people has found the common drug may also reduce aggression and violent behavior.

If you’ve ever found room for dessert when you thought you were full, your gut bacteria might be to blame. Caltech scientists have shown that mice given antibiotics ate far more sugary snacks, hinting at a bacterial influence on overeating.

A study has utilized a new kind of computer modeling to investigate how pre-existing drugs could be repurposed to treat autism spectrum disorder (ASD). Among the findings was a discovery that an anti-diarrhea drug could improve ASD symptoms.