The New World Screwworm lays eggs in wounds or body openings of mammals, including cows, deer, birds, pets, and even humans.

Screwworms are possibly the most aptly named parasites imaginable, both literally and figuratively. Screwworms—technically, ...

Once the eggs hatch, the larvae crawl into muddy areas to grow into adult flies. Deer flies are smaller than horse flies at about ¼ to ½-inch long and have clear or smoky-grey wings with dark ...

The reason flies are drawn to people depends on their species, but most are following their instincts to find food, warmth, or a place to lay eggs ... mosquitoes, deer flies, and horse flies ...