WHAT DROOPY LIPS MAY MEAN

Your gelding is standing quietly in the cross ties, enjoying an extended grooming session, when you notice his lower lip—it’s hanging at least two inches below his upper lip, forming a deep cup that’s slowly filling with drool. Is this dramatically droopy lip a sign of neurologic trouble? Premature aging? Probably not. More likely it’s just an indication of self-confidence and relaxation.

A horse who is stressed or “on alert” will typically hold his mouth and chin tight. When he’s comfortable in his surroundings, that area softens, to the extent his lower lip may drop well below his upper lip. If you step back to look at his entire body, you’ll likely see the picture of contentment: ears pointed sideways, eyelids at half-mast and hind leg cocked in a resting position. Let him enjoy the moment.

Sometimes, however, a droopy lip can be cause for concern. If, for instance, your horse is alert and active, but his lip is still hanging, it might be a sign of injury or discomfort. Touch base with your veterinarian if you are worried. Some horses develop lip-flapping behavior tics under saddle, which can probably just be ignored if they don’t interfere with performance.

When the droopiness is laterally asymmetrical—meaning one side of the lip is hanging lower than the other—compare the entire left and right side of the horse’s face. A serious neurologic condition called Horner’s syndrome can cause asymmetrical facial tone. Other signs include abnormal sweating patterns and prolapse of the third eyelid. If you suspect your horse has this syndrome, call your veterinarian immediately.