A video showing a boat captain pulling parasites off a whale's head in a Mexican lagoon went viral. But a behavioral scientist told Insider that removing the parasites could actually hurt the whale.

Scientists have found over a dozen parasitic worms in the eyes of a black bear, renewing fears that humans could face an emerging danger from the tiny worms that can cause blindness. The black bear ...

Doctors removed a four-inch parasitic worm from a woman’s eyelid after it burrowed into her forehead and grew there for a ...

The dreaded rat lungworm—a parasite with a penchant for rats and slugs that occasionally finds itself rambling and writhing in human brains—has firmly established itself in the Southeast US and will ...