Scientists have recorded same-sex behavior across many animal groups, including mammals, birds, and reptiles. Still, the meaning of that behavior depends on the species and the context. Behavior that ...

(CNN) — Same-sex sexual behavior has been observed in more than 1,500 animal species, but a new study has found that it is massively underreported by researchers. Observations of this same-sex ...

Homosexual behaviour in primates has a deep evolutionary basis and is more likely to occur in species that live in harsh environments, are hunted by predators or live in more complex societies, ...

Add Yahoo as a preferred source to see more of our stories on Google. Japanese macaques at Joshin-etsu National Park in Japan. (Peter Adams / Getty Images file) (Peter Adams) Humans are far from the ...

Animals that adapt behaviorally may evolve physically more slowly, showing resilience rather than weakness in changing ...

Animal behaviour encompasses a vast spectrum of actions and reactions by organisms as they interact with their environment and each other. Drawing on insights from classical ethology, behavioural ...

A tiger walks the same worn groove along the edge of its exhibit, like a broken record. A parrot methodically plucks out its own feathers until bare skin shows through. To a casual visitor, these can ...

Tagging wildlife alters animal behavior for days, reports new research. The findings highlight a need for longer tracking periods to better understand animal behavior in the wild. The corresponding ...

Rachel Grant does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their ...

Two lion brothers rubbing heads in sign of affection and bonding© RichartPhotos/Shutterstock.com Scientists have recorded same-sex behavior across many animal groups ...

Scientists have documented same-sex behavior in hundreds of animal species, though it is not considered a required function for specific ecosystem roles. Some researchers suggest that genetic ...