20/05/2026
👅 The grass muscle!
The most sensitive part of the tongue!
😋Also referred to as the Ta**us bulge, grass tongue, its the genioglossus muscle.
🍴Basically its job is to move grass around in the mouth. It connects the tongue to the hyoid apparatus and jaw, playing a vital role in both chewing and stabilising the upper airway during respiration and exercise.
🐎It varies in thickness, height and position in every horse and because it is highly sensitive it can very much control what bit pressures a horse will tolerate.
😝Many bits will use tongue pressure as a means of controlling the horse and generally horse's with a larger grass muscle will not like this style of pressure.
✨️They will react in various ways to avoid having pressure on the tongue
- head high, head too low - hollow frame.
- inconsistent head carriage
- open mouth
- rolling tongue around
- withdrawing tongue
- tongue sticking out
- tongue over the bit
- rushing on / not going forward properly.
- head tossing
- stiffness throughout the jaw / neck / poll and body.
🤔 Most people's typical reaction to a horse getting its tongue over the bit is too lift it higher but you are in actual fact lifting it closer to this sensitive area which will make the horse more uncomfortable.
🐴 In over 90% of the cases I see as a bit fitter the horse is reactive to some form of tongue pressure. 👅
Thank you to a client for the photo x
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