from farms to houses; Spread of deadly parasite to American dogs and cats Parasitic worms known as "screw-eating flies" have reached three US states by identifying new cases in Arizona; A parasite that can cause deep and even fatal wounds in animals.

from farms to houses; Spread of deadly parasite to American dogs and cats Parasitic worms known as "screw-eating flies" have reached three US states by identifying new cases in Arizona; A parasite that can cause deep and even fatal wounds in animals.