Muntjac deer are known as “vampire deer” for their fangs, but their strangest feature lies beneath their eyes.

A large-scale analysis of 117 mammal species found that preventing reproduction is associated with longer lifespans, suggesting a strong link between reproductive activity and life expectancy. Why do ...

Northern elephant seals are protected by federal law, and disturbing them during fasting and breeding can cause stress, ...

Animals that can change their sex naturally might sound surprising at first, but in nature, it is simply another survival ...

A new study from Bar-Ilan University shows that one of sleep's core functions originated hundreds of millions of years ago in ...

Some animals reproduce only once before dying. This life strategy, called semelparity, sees organisms channel all energy into ...

A team of researchers studied the effects of heat on the survival and reproduction of Missouri treehoppers. "This is more of ...

As of December 2025, the Milwaukee County Zoo’s new indoor rhino and hippo habitats are officially open to the public. Known as the Ladish Co. Foundation Rhino Care Center, the exhibit marks the ...

As herds rely on fewer replacement heifers, the stakes for getting each one pregnant at the right time are higher than ever.

Researchers at the University of Arizona have received a nearly $3 million grant from the National Institutes of Health to study the impact of phthalates on women’s fertility.

Humans like plants. We like seeing them change the colour of their leaves throughout the year. They connect us to nature even if we live in a big ...

Mice have remained the focal point for life sciences research for the past several decades. Their universality in biomedicine ...