What should I do when my horse shows dangerous behavior?

Dangerous horse behavior — rearing, bolting, striking, kicking at people, or biting with intent — requires an immediate honest assessment of whether the situation is beyond your skill level, because continuing to handle a genuinely dangerous horse without the appropriate experience puts you and others at serious risk. The first and most important decision is whether to call a professional. A horse that has escalated to behaviors that have caused injury or that you cannot safely manage is not a training challenge for an inexperienced handler — it is a job for a professional trainer with the skill set to address it safely. Set your ego aside and make that call if there is any doubt. For behaviors that occur unexpectedly, your immediate priority is your own safety: create distance between yourself and the horse, release pressure if you are holding the lead rope and the horse is pulling dangerously, and do not attempt to physically restrain a horse that is significantly stronger than your ability to control it. After the immediate event, evaluate the cause before the next handling session: was the behavior triggered by pain, fear, a specific handler action, or an environmental factor? New or suddenly escalating dangerous behavior warrants veterinary evaluation before any training response, because a horse in pain is unpredictable and treating pain-driven behavior as a training problem delays the real solution. Document what happened, what triggered it, and what the horse did — that information helps your veterinarian and trainer understand the pattern and design an appropriate response.