Why Does a Horse Shake His Head?

What causes horses to shake their heads, and how can this issue be resolved?

No account yet? Register


Why Does a Horse Shake His Head?
Photo: iStock
Q. What causes horses to shake their heads, and how can this issue be resolved?

A. This is actually a question that could have quite an expansive answer. Headshaking can take lots of forms:

  • The head toss seen with play behavior and inter-male aggression;
  • The occasional shake seen after rolling or with insect avoidance;
  • Rhythmic nodding; and
  • Excessive, troublesome headshaking during work

We do see some horses that standing at rest in their stall perform a rhythmic, unchanging, vertical nodding. This seems to be a stereotypy much like other movement stereotypies in confined horses, including weaving. This should be distinguished from more dramatic and sometimes debilitating headshaking that may include incessant vertical tossing of the head, frequent snorting, and urgent attempts to rub the nose.

Both of these types of horses should first have a thorough physical exam by a veterinarian. A certain number will have a diagnosable medical condition causing this behavior, including bone, dental, sinus, or eye problems. Some could have persistent irritation from parasites or vegetation such as foxtails. Tack should be investigated, but unfortunately that is not so commonly the cause of the severe head shaker

Create a free account with TheHorse.com to view this content.

TheHorse.com is home to thousands of free articles about horse health care. In order to access some of our exclusive free content, you must be signed into TheHorse.com.

Start your free account today!

Already have an account?
and continue reading.


No account yet? Register

Written by:

Prior to attending veterinary school, Dr. Nancy Diehl completed a master’s degree in animal science while studying stallion sexual behavior. Later, she completed a residency in large animal internal medicine at the University of Pennsylvania’s New Bolton Center and worked in equine practices in Missouri and Pennsylvania. Diehl also spent six years on faculty at Penn State, where she taught equine science and behavior courses and advised graduate students completing equine behavior research. Additionally, Diehl has co-authored scientific papers on stallion behavior, early intensive handling of foals, and feral horse contraception. Currently she is a practicing veterinarian in central Pennsylvania.

Leave a Reply

Related Articles

Stay on top of the most recent Horse Health news with

FREE weekly newsletters from TheHorse.com

Sponsored Content

Weekly Poll

sponsored by:

When do you vaccinate your horse?
305 votes · 305 answers

Readers’ Most Popular

Sign In

Don’t have an account? Register for a FREE account here.

Need to update your account?

You need to be logged in to fill out this form

Create a free account with TheHorse.com!