Let's think this through and use our heads. There is no such thing as a biting stage in a horse's development. There can be more than
one reason for a horse to nip. Aggressive behavior is only one, another could be he was taught this by you. Maybe not directly but indirectly. Such as by hand feeding him and not responding timely to him starting to nip to get more. You are the only person that can figure out why. Safety comes first, if your horse is actually biting you, attacking you that has to stop. How you address this is important. It is my feeling aggression breeds more aggression so I never strike a horse in anger but I will protect myself and make sure he understands I am the boss. This takes very little effort. For example a flick of a rope will work as a deterrent, not striking or beating. Then do some ground work with him so he understands if uses inappropriate behavior he will have to work. (need to redirect his behavior). If it is because he wants treats, stop hand feeding him put it in his feeder. Now if he keeps nipping for more food then simply put up your elbow (blocking and protecting yourself from being bit) and let him run into it. Therefore he is poking himself, don't ever hit him in the face you will be creating new problems. If he doesn't like being cinched and nips this could be for several reasons so lets give him the benefit of the doubt since he can't talk and tell you the problem. Maybe you are not cinching him properly and are pinching him? So put your hand between the horse and the cinch and tighten slowly so you don't hurt him. Maybe your saddle doesn't fit properly and it is uncomfortable and painful on his back. Maybe he doesn't like to be ridden because of the way you ride or treat him. There are many possibilities. You need to by process of elimination try to figure out the problem. However, all horses have different personality just like people and if your horse is just difficult or you can't logically figure out why he nips when cinching I suggest you lay the lead line over the arm nearest to his head and if he turns to nip stick out your elbow and let him run into. Resolving problems with horses requires someone who pays attention to their horses body language and tries to figure out how to solve the problem ...this may require you to try many options but who cares, what works for one may not work for another horse. There is never a quick fix for any horse with a problem.
one reason for a horse to nip. Aggressive behavior is only one, another could be he was taught this by you. Maybe not directly but indirectly. Such as by hand feeding him and not responding timely to him starting to nip to get more. You are the only person that can figure out why. Safety comes first, if your horse is actually biting you, attacking you that has to stop. How you address this is important. It is my feeling aggression breeds more aggression so I never strike a horse in anger but I will protect myself and make sure he understands I am the boss. This takes very little effort. For example a flick of a rope will work as a deterrent, not striking or beating. Then do some ground work with him so he understands if uses inappropriate behavior he will have to work. (need to redirect his behavior). If it is because he wants treats, stop hand feeding him put it in his feeder. Now if he keeps nipping for more food then simply put up your elbow (blocking and protecting yourself from being bit) and let him run into it. Therefore he is poking himself, don't ever hit him in the face you will be creating new problems. If he doesn't like being cinched and nips this could be for several reasons so lets give him the benefit of the doubt since he can't talk and tell you the problem. Maybe you are not cinching him properly and are pinching him? So put your hand between the horse and the cinch and tighten slowly so you don't hurt him. Maybe your saddle doesn't fit properly and it is uncomfortable and painful on his back. Maybe he doesn't like to be ridden because of the way you ride or treat him. There are many possibilities. You need to by process of elimination try to figure out the problem. However, all horses have different personality just like people and if your horse is just difficult or you can't logically figure out why he nips when cinching I suggest you lay the lead line over the arm nearest to his head and if he turns to nip stick out your elbow and let him run into. Resolving problems with horses requires someone who pays attention to their horses body language and tries to figure out how to solve the problem ...this may require you to try many options but who cares, what works for one may not work for another horse. There is never a quick fix for any horse with a problem.