| Parasite Species | Life Stage | Site(s) of Infection |
|---|---|---|
| Echinostoma spp. | Metacercaria | Kidneys |
| Fibricola spp. | Metacercaria | Muscle, connective tissue |
| Gyrinicola batrachiensis | Adult | Intestinal tract |
| Manodistomum syntomentera | Metacercaria | Skin, connective tissue |
| Megalodiscus spp. | Metacercaria | Rectum |
| Mesocestoides spp. | Tetrathyridia | Connective tissue, muscle |
| Nyctotherus spp. | Trophozoite | Intestinal tract |
| Opalina spp. | Trophont | Intestinal tract |
| Rhabdias spp. | Adult | Lungs |
| Ribeiroia ondatrae | Metacercaria | Skin, connective tissue, muscle |
| Spironucleus spp. | Trophozoite | Rectum |
| Tritrichomonas spp. | Trophozoite | Intestinal tract |