Spotted hyena clans flip the script on mammalian power: here, dominance is inherited, alliances matter most and females rule every level of society.

Not all fish play by the same reproductive rules. Evolutionary biology reveals how deception became a successful mating ...

Like the males of many animal species, male Drosophila melanogaster fruit flies, a commonly studied lab animal, are aggressive toward one another and even fight when competing for resources such as ...

Add Yahoo as a preferred source to see more of our stories on Google. If you’re thinking about adopting a cat, one of the biggest questions you might face is whether to choose a male or a female.

If you’re thinking about adopting a cat, one of the biggest questions you might face is whether to choose a male or a female. While every cat has its own personality, there are some commonly observed ...

A new study on mayflies of the genus Ecdyonurus illustrates just how multifaceted and surprising reproductive behavior in ...

However, these 12-foot-long, solitary sharks appear to form important social bonds. A study published today in the journal Animal Behaviour finds that they create these relationships with only a few ...

Four tarantulas discovered in Arabia and Africa form a new genus, Satyrex, distinguished by males with unusually long palps ...

Citizen scientists listened to pairs of mating sounds from 16 different species, including male zebra finches, and selected ...