There is nothing equal to the large wooden gag-bit

<h2>There is nothing equal to the large wooden gag-bit</h2><br>
<br>
<p>For conquering a vicious, biting horse, there is nothing equal to the
large wooden gag-bit, which Mr. Rarey first exhibited in public on the
zebra. A muzzle only prevents a horse from biting; a gag, properly used,
cures; for when he finds he cannot bite, and that you caress him and rub
his ears kindly with perfect confidence, he by degrees abandons this
most dangerous vice. Stafford was driven in a wooden gag the first
time. Colts inclined to crib-bite, should be dressed with one on.</p>
<div class="figcenter">
 <img src="http://taming-horses.f1cf.com.br/images/illus-066.png" /><br>
 <span class="caption">Wooden gag bit.</span>
</div>

Fonte: Tamming Horses