Abstract: Apparatus for substantially reducing equine cribbing behavior, comprising: a collar that can be placed about the neck of a horse, and a control circuit carried by the collar for applying a shock to the horse; the control circuit comprising a first sensor that detects an equine characteristic related to cribbing activity and a second sensor that detects equine activity other than cribbing; the control circuit comprising a logic circuit for preventing the application of a shock to the horse in response to a detected equine cribbing characteristic when the second sensor detects equine activity other than cribbing.