Relaxed lower lip
The lower lip hangs loose and sometimes slightly down. Usually relaxation or dozing.

What you see
The lower lip is slack and droops a little, sometimes showing the gum. The chewing muscles and the muzzle are loose.
What it can mean
- Deep relaxation or dozing, often with a low head and half-closed eyes.
- Rest after effort or drowsing in the sun.
- In some horses, a habitual posture while being groomed on a favourite spot.
What this does not prove
A hanging lower lip is no proof of happiness, and a slack lip on a dull, unresponsive horse can be worrying. A suddenly drooping lip on one side can point to a nerve problem.
Read the combination and the context
Distinguish a loose lip on a horse that is otherwise relaxed and dozing from a slack or crooked lip on a horse that is dull or unresponsive. Watch the symmetry of the face.
When to seek help
A sudden drooping or crooked lip, especially on one side, together with dullness or trouble eating, should be looked at by a vet.
Discover more
Sources: McDonnell, S. (2003), University of Pennsylvania School of Veterinary Medicine (New Bolton Center) · World Horse Welfare.