Add Yahoo as a preferred source to see more of our stories on Google. illustration of single-cell parasites floating through the bloodstream alongside blood cells illustration of single-cell parasites ...

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: wildpixel via Getty ...

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 ...

Deep in the caves of Ireland, scientists have discovered a mind-altering parasite that takes control of spiders, forcing them to abandon their webs before ultimately meeting a gruesome end. This newly ...

Wolves are pack animals, living in family groups led by a matriarch and her mate. Some wolves stay with their pack their whole lives, helping hunt and raise pups like aunts and uncles as they mature, ...