animal sex

Mating frequently improves sperm quality, at least if you're a toad

Sperm senescence could be modulated by external factors, such as temperature or mating frequency, according to a recent study

Incest in the wild is more common than you think

Avoiding inbreeding may be the exception, rather than the norm, in many animals, including humans

Fluorescence: the secret power of scorpions

The ecological function of the glow in the dark of these arachnids is still a mystery to science

Can you die from excess sex?

Sex improves our health but it can also kill us. In the case of this species of marsupial native to Australia, this is the only possible destination for males.

Is it true that hyenas are hermaphrodites?

The female hyena's clitoris, as big as a penis, has zoologists confused.

Does having sisters reduce a man's erotic appeal?

Recent research reveals the effect that parenting with sisters has on a man's sex life.

Baboons assault females to mate

Research indicates that these African monkeys intimidate females as a long-term mating strategy, a possible source of sexual violence

Promiscuity slows down evolution

Research with birds shows that, contrary to popular belief, promiscuous behavior decreases the chances of new species emerging.

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