Campylobacteriosis

Campylobacteriosis is an infection of the digestive tract caused by bacteria in the Campylobacter genus. These bacteria can settle in the intestines and cause inflammation, leading to diarrhoea that may contain mucus or blood. Many dogs and cats carry Campylobacter without showing any signs, but younger animals, those with other health conditions, or those under stress may develop symptoms. Owners most often notice loose or watery stools that appear suddenly, sometimes with a distinctly foul smell or visible streaks of blood. The diarrhoea may be accompanied by a reduced appetite, occasional vomiting, or signs of mild abdominal discomfort. In many cases, signs resolve on their own within a few days, though the bacteria may persist in the gut for weeks or months. This page explores what patterns tend to raise suspicion for campylobacteriosis, what happens in the intestinal lining during infection, how the condition is investigated through faecal testing, and what approaches exist for managing symptoms and supporting recovery.