Gut sounds in horses: what do they tell you?

Why gut sounds matter so much

A horse's gastrointestinal tract is constantly in motion. Peristalsis — the rhythmic contractions of the intestinal wall — drives food and gas through the system. That movement produces sound. In a healthy horse you regularly hear gurgling, clicking, or rumbling sounds in all four quadrants of the abdomen. If those sounds are absent or unusually loud, that tells you something about the state of the intestines. Early detection can limit a colic episode to a mild obstruction rather than a surgical intervention.

What are normal gut sounds?

In a healthy horse you can hear an average of 2 to 4 sounds per minute per quadrant with a stethoscope. If you place your ear or the stethoscope high on the right flank, you will hear the caecum — a large fermentation chamber that regularly produces loud, fluid-like sounds. This can sound like a waterfall and is perfectly normal. The left side produces softer, more even rolling sounds. Horses at rest or after a meal have more active gut sounds than horses that have just been exercising intensively.

Warning signs: this doesn't sound right

Abnormal sounds require attention. Pay particular attention to these signs:

• Complete silence in one or more quadrants for longer than 2 minutes — indicates reduced or stopped intestinal motility
• Extremely loud, high-pitched 'ping' sounds — may indicate gas accumulation or a dilated intestinal loop
• Persistent sloshing (fluid sounds without gas movement) — possible sign of an ileus or obstruction
• Brief absence after intensive exercise — temporarily normal, recovery expected within 30 minutes
• Gut sounds combined with signs of pain, sweating, or rolling — immediate reason to contact the vet

How to assess the gut yourself

You don't need medical training to carry out a basic check. With a standard stethoscope (costing approximately €15–30) you listen for 60 seconds per quadrant: upper left, lower left, upper right, and lower right. Count the sounds. Fewer than 1 per minute in a quadrant is a warning sign. Record your findings including the time, your horse's behaviour, and what it has eaten over the past few hours. In the EquiSight horse profile you can log these kinds of observations directly, so that at the next incident you have a clear timeline ready for the vet.

Common causes of abnormal gut sounds

• Diet change: switching from hay to grass too quickly speeds up fermentation and gas production
• Insufficient water intake: less than 30 litres per day increases the risk of impaction colic
• Stress or transport: elevated adrenaline temporarily inhibits gut motility
• Parasites: stomach bots and small strongyles impair intestinal motility
• Dental problems: poorly chewed roughage increases the risk of obstructions in the large intestine

Prevention: keeping the gut moving

The basics are simple: sufficient roughage, clean water, and regular exercise. Make sure your horse receives at least 1 kg of dry matter per 100 kg of body weight per day in roughage. Feed preferably at least twice a day and introduce fresh grass gradually over two to three weeks. Use the calendar in EquiSight to keep track of dental checks, deworming, and vaccinations — all of these factors indirectly affect gut health. EquiCoach can help you put together a suitable feeding schedule based on weight, activity level, and season.