Some prairie voles are monogamous, while others seek out multiple mates. In a recent study, researchers from the University of Texas at Austin reveal sexual behavior is largely controlled by genetic differences in the rodents' brains, suggesting natural selection has allowed for both characteristics to co-exist.
A study of the porosity of ancient archosaur eggshells is tipping scientists off about the kinds of nests they once called home.
A male's sperm has one job -- to fertilize a female's eggs. So why is sperm from rodents so much longer than that of larger mammals, such as primates, tigers and even whales? Researchers may now have the answer.
University of Exeter reseachers took a closer look at fruit flies and found that while environmental conditions have some influence on their mating decision, it mostly comes down to genetics.
Some lizards may not be able to cope with future climate change temperatures, say researchers from the University of Exeter. Ultimately, they may have to adopt the motto "live fast and die young."
With Halloween fast approaching, this is a good time to learn about a relatively small crustacean known as the Halloween crab for its colorful appearance.
Male crickets often use edible gifts to attract females during mating. However, unique proteins contained in this gift may alter female's behavior to ensure reproductive success.
A new study confirms that a well-preserved fetus and soft tissues were found in 48-million-year-old fossils of a small horse-like species.
Long-beaked echidnas are threatened by habitat loss and hunters in New Guinea and Indonesia. After conservationists successfully bred short-beaked Anteaters, they're now turning their attention to the species long-beaked relatives.
Mother butterflies pass down behaviors that help their offspring survive in less-favorable environments and tend to lay their eggs on the same plants that they and their relatives grew up on.
Female butterflies choose their mates based on smell. However, some male hairstreak butterflies have evolved without scent-producing organs, which puts them at a disadvantage.
Birds that are able to mate with their "true love" have a higher rate of reproduction success and are more committed to their offspring, according to researchers from the Max Planck Institute for Ornithology.
A recent study observed the reproduction success of male orangutans. They found that females are more attracted to males with padded cheeks.
The longhorned beetle was long thought to be the cologne connoisseur of the insect world, selecting mates based on smell alone. However, like a frat house drowning in Axe body spray, sometimes all the males in a region smell the same. So how do lady longhorns know who's 'Mr. Right?' According to a new study, timing is everything.
Here's something you probably didn't know. Sharks, skates, and rays - everyday Chondrichthyes - boast some very strange sexual organs. Like a pair of clasper-like penises, the male sex organs of a shark literally hook inside a female shark's cloaca in a unique reproductive strategy. Now, researchers think they have finally determined how these animals developed such strange members.