Scientists warn that the mosquito-borne virus may be transmitted by oral sex, or even kissing.
The danger that involves teenagers is unsafe sex, which results in a lot of potential problems, as well as deaths.
A study reveals that couples in a committed relationship who have sex four or five times a week did not report feeling any happier than those couples who only have intercourse once a week.
Contact, rather than waterborne chemical signals, induces sex change in marine snails known as slipper limpets.
Gender of many reptiles, including crocodilians and turtles, is largely determined by the temperature in which eggs incubate. When taking a closer look at the molecular mechanisms behind this phenomena known as temperature-dependent sex determination, researchers discovered a thermosentive protein inside the egg plays a key role.
As the weather starts to get colder, female hamsters may start acting out. That is because different levels of melatonin actually trigger a sex hormone known to cause aggression, suggesting sex hormones play an important role in controlling such behaviors.
Warmer climates are yielding more female hatchlings, researchers explain in a new study. This could have serious impacts on the survival of struggling loggerhead sea turtle populations in Florida.
Most animals will go to great lengths to find a mate and ensure their survival, but the fatal attraction between certain marsupials takes it too far, causing these species to literally sex themselves to death.
It seems that males may not be necessary for reproduction after all. Scientists have discovered that around three percent of smalltooth sawfish living in a Florida estuary are the product of "virgin births" - the first case ever seen in vertebrates in the wild.
It is common belief that having more sex will lead to increased happiness - after all, it's a form of exercise, which gives you endorphins, helps you sleep better and reduces stress. However, surprising new research claims that more sex doesn't necessarily mean more happiness.
When you hear "getting it on like animals" you probably think animals are 'doing the deed' all the time and whenever they please. But when you really think about it, how could they? With predators always looking to make an easy meal of any pair that's... distracted, it may be hard to get some alone time. That's why one frog in Brazil builds secret underwater chambers just for this purpose.
Stegosaurus were known for their spiked tails and armor-like exterior, and new research shows that their iconic bony plates may have determined the sex of these dinosaurs, according to new research.
Exposure to bisphenol A (BPA), a chemical used in various plastic consumer products, is disrupting turtle reproduction in terms of their sexual differentiation, according to a new study.
You've probably heard it on TV and social media. This is the "Age of the Big Butt," where society's concept of beauty is increasingly coinciding with sex appeal and a love for curves. A large-but-toned backside in particular is supposedly the new vogue (even if men have been staring at them for centuries). Now, researchers from The University of Texas (UT) at Austin explain that our fascination with the butt is being driven by evolution, and it may actually be all about the spine.
The strange world of spider sex: it's a popular subject among researchers because, well, it will certainly keep you guessing. That's pretty much how things went recently for a team of scientists studying the Darwin's bark spider (Caerostris darwini), after discovering that males may be performing oral sex to keep females happy and - most importantly - not wondering what their mate might taste like.