Eating red clover can cause a horse to drool excessively. It is not harmful to the horse; it is just a little alarming to see a horse drool. If your horse is grazing red clover, then simply removing it from the red clover field will cause the drooling to cease. However, teeth or mouth problems can also cause a horse to drool. Occasionally, a horse may get something lodged in its throat which may cause excessive drooling so it is always wise to have a veterinarian examine your horse to eliminate all possible causes.
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This work is supported in part by New Technologies for Agriculture Extension grant no. 2020-41595-30123 from the USDA National Institute of Food and Agriculture. Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture.
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