| Parasite Species | Life Stage | Site(s) of Infection |
|---|---|---|
| Alaria spp. | Mesocercaria | Skin, connective tissue, tongue |
| Apharyngostrigea pipientis | Metacercaria | Connective tissue |
| Auridistomum spp. | Metacercaria | Skin, connective tissue |
| Clinostomum spp. | Metacercaria | Skin, connective tissue |
| Echinostoma spp. | Metacercaria | Kidneys |
| Entamoeba spp. | Trophozoite | Intestinal tract |
| Euryhelmis spp. | Metacercaria | Skin |
| Fibricola spp. | Metacercaria | Muscle, connective tissue |
| Glypthelmins spp. | Adult | Small intestine |
| Gyrinicola batrachiensis | Adult | Intestinal tract |
| Halipegus spp. | Adult | Eustachian tubes, esophagus |
| Lernaea spp. | Adult | Skin |
| Manodistomum syntomentera | Metacercaria | Skin, connective tissue |
| Nyctotherus spp. | Trophozoite | Intestinal tract |
| Opalina spp. | Trophont | Intestinal tract |
| Oswaldocruzia spp. | Adult | Intestinal tract |
| Rhabdias spp. | Adult | Lungs |
| Ribeiroia ondatrae | Metacercaria | Skin, connective tissue, muscle |
| Spironucleus spp. | Trophozoite | Rectum |
| Tritrichomonas spp. | Trophozoite | Intestinal tract |
