Instructions
Say "no" to the horse in a firm, loud voice. Jerk his reins, spritz water from a water bottle in his face or hit him on the nose. Let him know he's done something wrong.
Wear thick clothing and heavy gardening gloves when around the horse. A few sweaters or a thick jacket and gloves can prevent injury, if the horse does bite at you.
Give the horse plenty of attention. Ride him often, groom him regularly and play with him. Some believe that horses bite for attention. Spending time with and interacting with the horse can in many instances stop the biting habit.
Reward the horse often for good behavior. He can soon associate acceptable behavior with good things and biting with punishment.
Move the horse around immediately after he tries to bite. Work him hard, then approach him again. If he tries to bite, repeat. Soon the horse associates biting with working hard, and this may lead him to stop the habit.
How to Deal With a Horse That Bites
While kicking may be more commonly linked to horses, biting is also a dangerous habit a horse can develop. Horse bites can be very serious; there are reports of people having whole muscles torn out of their arms from horse bites. With some fairly simple techniques, you can handle a horse that bites and eventually stop the behavior altogether.