| 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 |
| Cephalogonimus spp | Adult | Skin, connective tissue |
| Clinostomum spp. | Metacercaria | Skin, connective tissue |
| Gyrinicola batrachiensis | Adult | Intestinal tract |
| Entamoeba spp. | Trophozoite | Intestinal tract |
| Fibricola spp. | Metacercaria | Muscle, connective tissue |
| Glypthelmins spp. | Adult | Small intestine |
| Gorgoderid spp. | Adult | Intestinal tract |
| Gyrinicola batrachiensis | Adult | Intestinal tract |
| Haematoloechus longiplexus | Adult | Lungs |
| Haematoloechus spp. | Adult | Lungs |
| Halipegus spp. | Adult | Eustachian tubes, esophagus |
| Lernaea spp. | Adult | Skin |
| Lankesterrela spp. | Trophozoite | Blood |
| Manodistomum syntomentera | Metacercaria | Skin, connective tissue |
| Megalodiscus spp. | Metacercaria | Rectum |
| Mesocestoides spp. | Tetrathyridia | Connective tissue, muscle |
| Neascus spp. | Metacercaria | Skin |
| 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 |
| Trypanosoma spp. | Trophozoite | Blood |
