A horse’s teeth “erupt” until the age of 25-30.  On their natural diet of grass, the grass wears down their teeth, and the action of reaching down to graze, and then raising the head to chew, changes the jaw position. The horse’s upper molars are spaced farther apart that the lower ones, which makes for efficient grinding of grass.

Grazing horses raise their heads to chew.

However, when a horse has a diet of grain and hay (such as alfalfa), there is less fiber in their diet, and the tooth surfaces are not ground down.  When these surfaces become uneven, the horse cannot move his jaw sideways, and then the teeth become even more uneven.  Eventually, there are sharp points in the horse’s mouth, making chewing a painful experience.

Often a horse who is losing weight will turn out to have a tooth problem.  Once the teeth have been floated properly, chewing is easier, and the food’s nutrients can be processed efficiently.

Likewise, a horse with behavior issues may have a tooth problem.  It’s hard to work and be nice with razors cutting the inside of your mouth every time you eat!


Signs of Problems

The following concerns can be related to issues involving the teeth. If your horse exhibits these symptoms, you should have a veterinary equine dentist examine your horse’s mouth:

Quids are cigar-shaped wads of hay produced when horses try to chew hay, but cannot.

  • loss of weight or general condition
  • dropping feed
  • whole grain in manure
  • tilting head while chewing
  • quidding
  • head tossing / resisting the bit
  • bleeding gums
  • swelling on face or jaw
  • bad odor from mouth or nose