| Parasite Species | Life Stage | Site(s) of Infection |
|---|
| Alaria spp. | Mesocercaria | Skin, connective tissue, tongue |
| Auridistomum spp. | Metacercaria | Skin, connective tissue |
| Choledocystus spp. | Metacercaria | Gall bladder, bile ducts, liver |
| Echinostoma spp. | Metacercaria | Kidneys |
| Gyrinicola batrachiensis | Adult | Intestinal tract |
| Fibricola spp. | Metacercaria | Muscle, connective tissue |
| Mesocestoides spp. | Tetrathyridia | Connective tissue, muscle |
| Manodistomum syntomentera | Metacercaria | Skin, connective tissue |
| Nyctotherus spp. | Trophozoite | Intestinal tract |
| Opalina spp. | Trophont | Intestinal tract |
| Ribeiroia ondatrae | Metacercaria | Skin, connective tissue, muscle |
| Spironucleus spp. | Trophozoite | Rectum |
| Trichodina spp. | Trophozoite | Skin, intestinal tract, respiratory tract, urinary tract |
| Tritrichomonas spp. | Trophozoite | Intestinal tract |
