Add Yahoo as a preferred source to see more of our stories on Google. The difficult-to-detect meningeal worm is spread by white-tailed deer and is a notorious killer of moose. AP Photo/Jim Cole, File ...

Parasitic hairworms manipulate the behavior of their hosts in what's sometimes called 'mind control.' A new study reveals another strange trait shared by different hairworm species: they're missing ...

When a parasite infects a host, it can manipulate host behavior, which may help spread the parasite to new hosts, or enable the parasite to complete its life cycle. Parasitic worms known as hairworms ...

The New World screwworm is getting dangerously close to the U.S., public health officials warn. If left untreated, a ...

A parasite that lives permanently in the brains of millions may not be as uniformly dormant as scientists once thought.

Scientists found a parasitic animal in the forests of China, Indonesia and Vietnam and discovered a new species, a study said. Photo from zhang kaiyv via Unsplash In a forest in southern China, a ...

Animal species all follow the same rule for how common they are in an ecosystem, scientists have discovered. And the rule is simple. Everything from birds to fishes, crabs to snails to worms, and the ...

The New World screwworm flies lay their eggs in wounds, noses, ears, eyes or mouths. Their eggs develop into parasitic larvae ...

River otters are unequivocally cute. But their eating habits are not so adorable. Most animals—humans included—separate the place where they defecate from the place where they eat. But river otters ...