Saliva production stimulated by chewing, particularly when combined with the action of a bit in the mouth, results in a foamy substance appearing around the lips of equines. This physiological response is commonly observed during riding or driving activities and is a mixture of saliva and air.
The presence of this froth is often interpreted as a positive indicator of relaxation and acceptance of the bit. Historically, experienced horsemen have viewed consistent, moderate production as a sign of proper engagement and responsiveness to the rider’s aids. Furthermore, adequate salivation aids in digestion.
