As doctors visited the home of a 65-year-old farmer in North Wollo, Raya Kobbo, he told them his saliva had tints of blood, occasionally bright red, according to a medical case report published March ...

Animals with multiple brains have evolved this way to improve survival. Whether it's for controlling many limbs independently ...

For centuries, observers have told tales of leeches leaping through the air in pursuit of their next meal—with written ...

But leeches aren’t just useful at crime scenes. These creatures’ sanguineous appetites have also come in handy for scientists, who are hoping to use them to solve another mystery: the diversity of ...