Species which have been reported include:
- Chilomastix mesnili
Infection occurs by the ingestion of cysts in contaminated water, food, or by the fecal-oral route (hands or fomites). The cyst stage is resistant to environmental pressures and is responsible for transmission of this organism.
Chilomastix normally reside in the microaerophilic epithelium of the colon and are commonly found during routine coprological surveys, with up to 10% of urban dogs commonly harboring them in their intestinal microflora.
Both cysts and trophozoites can be found in the feces (diagnostic stages).
No disease has been reported in dogs associated with Chilomastix, although they should be considered in dogs with chronic diarrhea.
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