Nobody likes a mooch, but new research finds that grifting off others is a sound evolutionary strategy. Parasitism — a survival strategy that involves hijacking a host's nutrients for one's own ...

When researchers studying spiders and scorpions at the Zoological Collections Laboratory of the Butantan Institute in São ...

A moose in Minnesota stumbles onto the road. She circles, confused and dazed, unable to orient herself or recognize the danger of an oncoming semitruck. What kills her is the impact of 13 tons of ...

Scientists often attribute the tendency of male mammals to die earlier than females to hunting, fighting for mates, and other risky behaviors that the males engage in. In the Sept. 20 Science, however ...

Deer, caribou, bison and other similar animals are often infected by a range of internal parasites, including worms called helminths. Although many of these infections are not lethal, they can still ...

Katie Clow receives funding from the Natural Sciences and Engineering Research Council of Canada (NSERC) and the Canadian Institutes of Health Research (CIHR). She has completed veterinary education ...

Against its will, it crawled up the stalk, marching toward its final destination. And then, from its skull burst forth the invader from within, releasing a bevy of its alien brood. This horror may ...

Whether it's finding a tick buried in your socks after a walk in the woods or yanking off a few leeches after a pond swim, parasites trigger revulsion in most of us. And forget about those worms in ...

From chimps tending wounds with bug juice to birds using cigarettes to ward of ticks and lice, animals have adapted creative ways to ward off health threats. Monarch caterpillars snack on milkweed, ...

Researchers agree it’s a long shot, but transmissible cancers could theoretically evolve into independent species. Certain weird parasites might be living proof. Aggressive cancers can spread so ...