Infected puppies typically have a rough coat, pot bellies, bad breath, general failure to thrive, and sometimes vomiting and diarrhea. Migrating larvae may carry bacteria into the intestinal wall, the circulatory system, and other organs through which they move. Such migration may cause organ damage, blindness, or, if the central nervous system is involved, death. These cases are very rare. The vast majority of these, however, do not experience symptoms or problems.
Wildlife can also harbor and distribute the infective stages of migratory parasites.
Raccoons like to defecate on wood piles. Cases have been reported of children being infected by sucking on wood chips from an outdoor wood pile. Several types of hookworms migrate in humans as well. People are infected when larvae penetrate their skin. The main problem of hookworm infections in your pet is blood loss.