Commonly Infected Wildlife

All wildlife.

Is This Animal Infected?

Roundworms are some of the most common worms found in wildlife worldwide.

Roundworms are often highly visible and are frequently seen in the abdominal cavity by hunters when cleaning game.

Usually the animal has no symptoms, except for the presence of the worms themselves, but vomiting and diarrhea may be observed.

Can I Get It?

Generally no, although some species may infect humans (see Raccoon Roundworm and Trichinosis).

Closeup of intestine full of ringworms
Wyoming Game and Fish Department

How bad can it get?

Although these infections are rare, there is a risk of getting the same symptoms as seen with the raccoon roundworm. Potentially fatal.

Human symptoms

Symptoms will depend on the species involved (see Raccoon Roundworm).

Protect Myself and Others

  • Since roundworm eggs are shed in the feces of wildlife, avoid contact with feces and materials (including soil) that might be contaminated with feces.
  • Wash your hands after handling potentially contaminated materials.
  • Wear protective clothing, including gloves.
  • Disinfect your work space.

Safe for Pets?


  • Although parasitic nematodes typically do not cause significant problems in their normal hosts, some species may infect pets and make them sick.
  • Do not feed infected carcasses to pets.
  • If you are concerned, contact your veterinarian for advice.

What Causes It?

Roundworms are parasitic nematodes found around the world.

Infections in non-normal host species may lead to disease (see Raccoon Roundworm and Brainworm).