Entamoeba histolytica is a microscopic intestinal parasite that can be detected in stool. It is not considered a normal part of the dog’s gut microbiome. Detection may reflect exposure through water, food, or surroundings that have been contaminated with faeces. Entamoeba histolytica is mainly linked to the large intestine, where it may irritate the intestinal lining and, in more significant cases, affect the tissue more deeply. Relevant findings may be associated with persistent diarrhoea, loose stools, mucus in stool, blood in stool, abdominal discomfort, reduced appetite, weight loss, or poor general condition. A positive finding may be useful to review with a veterinarian, especially if ongoing diarrhoea, blood or mucus in stool, weight loss, lethargy, fluid loss, or hygiene concerns are present.
