Sheep Vomiting or Regurgitation: Causes, Choke, Bloat & What to Do

Sheep rarely true-vomit the way dogs or cats do. More often, pet parents see regurgitation: feed, saliva, froth, or fluid coming back up because material is stuck in the esophagus or because gas and rumen contents cannot move normally. One of the most important causes is choke. With choke, a blockage in the esophagus can cause drooling, repeated swallowing, feed material from the mouth or nose, neck swelling, and distress. In ruminants, choke can also trigger secondary bloat, which makes the left side of the abdomen swell and can become life-threatening quickly.

Another major cause is bloat, also called ruminal tympany. This happens when fermentation gas cannot be released normally, or when foam traps gas in the rumen. Sheep may show left-sided abdominal distension, discomfort, frequent getting up and down, open-mouth breathing, and sudden collapse in severe cases. Frothy bloat is often linked to lush legume pasture or rapid diet changes, while free-gas bloat may happen with choke or poor rumen motility.

Less common but still important causes include grain overload and rumen acidosis, which can follow sudden access to concentrate feed. These sheep may look depressed, stop eating, bloat, develop diarrhea, and become dehydrated. Toxic plant or chemical exposure can also cause drooling, digestive upset, weakness, or neurologic signs. Because regurgitated material can be inhaled, any sheep bringing up feed or fluid is also at risk for aspiration pneumonia.

See your vet immediately if your sheep has trouble breathing, a rapidly enlarging left abdomen, repeated gagging, feed or foam from the nose, collapse, severe weakness, or obvious distress. These signs fit with choke, severe bloat, aspiration, or toxic exposure. In sheep, severe bloat can worsen over hours or even faster, and death can occur if pressure is not relieved.

You should also call promptly if the sheep cannot swallow normally, keeps stretching the neck, drools heavily, stops chewing cud, or has a firm swelling you can feel along the neck. Those signs raise concern for esophageal obstruction. If your sheep recently broke into grain, moved onto lush pasture, or may have eaten a toxic plant, same-day veterinary guidance is important even if signs seem mild at first.

Home monitoring is only reasonable for a sheep that had one brief episode, is now bright, breathing normally, eating, chewing cud, and has no abdominal swelling, no drooling, and no nasal discharge of feed or fluid. Even then, watch closely for the next 12 to 24 hours. If signs return, worsen, or the sheep seems quieter than normal, contact your vet.

Your vet will start with a physical exam and a careful history: what the sheep ate, when signs started, whether there was access to grain or lush pasture, and whether any drenching or tubing was attempted. They will check breathing, heart rate, rumen fill, abdominal distension, hydration, and whether there are signs of choke such as drooling, repeated swallowing, or feed coming from the nose. In some cases, your vet may be able to feel enlargement of the esophagus in the neck.

If bloat is present, your vet may pass an ororuminal tube to release gas and help tell whether the problem is free-gas or frothy bloat. Severe cases may need emergency decompression with a trocar or, less commonly, surgery such as rumenotomy. If choke is suspected, treatment may include careful esophageal lavage, sedation, anti-inflammatory medication, and monitoring for aspiration pneumonia. Your vet may recommend chest auscultation, imaging, or follow-up if there is concern that feed or fluid entered the lungs.

Depending on the case, additional care can include fluids, pain control, anti-foaming agents for frothy bloat, bloodwork, and treatment for rumen acidosis or toxin exposure. Prognosis is often good when the problem is recognized early, but it becomes more guarded if there is delayed treatment, severe bloat, esophageal damage, or aspiration pneumonia.

If your sheep is actively regurgitating, drooling, bloated, or struggling to breathe, do not try home treatment first. Call your vet. While waiting, remove feed, keep the sheep in a quiet area, minimize stress, and keep the head and neck in a natural position. Do not force water, grain, mineral oil, or oral drenches unless your vet specifically directs you to do so. In sheep with choke or poor swallowing, that can push material into the lungs.

If your vet has examined the sheep and advised home monitoring, follow the feeding plan exactly. That may mean temporary feed restriction, then gradual return to hay before concentrates. Watch for renewed drooling, repeated swallowing, left-sided abdominal swelling, cough, fever, nasal discharge, reduced cud chewing, or loss of appetite. Those signs can mean the original problem is returning or that aspiration pneumonia is developing.

Prevention matters too. Make feed changes slowly, limit sudden access to grain, and be cautious with lush legume pasture. Make sure feed is appropriate for sheep and offered in a way that reduces bolting or crowding. If one sheep in the flock shows digestive distress after a feed change, check the rest closely and contact your vet about herd-level management.