http://www.petsandparasites.org/dog-owners/roundworms/ Dog Roundworm (Toxocara canis) Roundworms: petsandparasites.org Current recommendations Companion Animal Parasite Council "Roundworms." Pets & Parasites. Web. Pets and Parasites: Dog Owners: Roundworms www.petsandparasites.org/dog-owners/roundworms pets petsandparasites.org