Parasitic Infections

Dogs/Cats have many parasites, both internal and external. Internal parasites are those which live in the various organs inside the dog’s body. Some of the internal parasites migrate through a number of different organs. Intestinal parasites are internal parasites that live in the small or large intestine (colon). External parasites, such as fleas, ticks, and mites, live on the outside of the body. Click on a topic header to read more about each type of parasitic infection. 

Roundworm Infection

Hookworm Infection


Tapeworm Infection


Parasite Prevention

  1. All new youngsters should be treated by 2-3 weeks of age. To effectively break the life cycle of the most common intestinal parasites, and should be dewormed on the schedule recommended by your veterinarian.
  2. Prompt deworming should be given when parasites are detected; periodic deworming may be appropriate for pets at high risk for reinfection.
  3. Prompt disposal of all pet feces, especially in yards, playgrounds, and public parks.
  4. Strict hygiene is especially important for children. Do not allow children to play in potentially contaminated environments. Be mindful of the risk posed by public parks and non-covered sandboxes. Sandboxes that have fitted covers are popular and are recommended to prevent infection of children with intestinal parasites.
  5. Nursing females should be treated concurrently with their youngsters; nursing may reactivate infection in the female.
  6. Use of a heartworm preventive that contains medication for prevention/control of roundworm and hookworms is advisable.