Instructions
Test for hormonal issues. Recently gelded colts may display aggression, particularly near the age of two; this is when testosterone production begins. The hormone might not leave a colt's system for several weeks after gelding. Mares showing aggression during their heat cycles might require treatment for a hormonal imbalance.
Feed the horse less grain. A horse that is snorting, running and charging -- or that displays excess energy -- may be consuming too much grain. Grain is a potent source of energy, and playful behavior may be mistaken for aggression. Only older or working horses actually need grain. A diet of protein-rich hay is sufficient for most horses.
Allow the horse room to exercise. Horses are active animals; they receive inadequate exercise if constantly penned in a stall or a small corral. Lack of exercise causes tension to build, and the horse may begin to display aggressive behavior. Provide horses at least one hour per day to exercise in a large corral or pasture.
Separate aggressive horses. Horses are social animals that enjoy the company of other horses, but certain personalities do not mix. Horses that engage in excessive fighting, kicking or biting are not compatible; separate them before serious injury occurs.
Check the horse's gear if aggression is displayed while riding. An uncomfortable bit -- or even a grass seed lodged in a blanket -- can cause serious irritation to a horse. It may react by bucking, rearing or plunging ahead unexpectedly.
Correct learned behavior such as biting, snapping or lunging at humans. The behavior might be due to personality or an issue in the horse's past. These behaviors must be corrected before serious harm is caused to humans. The assistance of a professional trainer is usually required.
How to Correct Aggressive Equine Behavior
Aggression in horses is a serious issue because of their size and strength. The majority of horses do not display aggressive tendencies, but sometimes even the nicest horse can turn mean and threatening. Correct aggressive equine behavior quickly, before a horse develops dangerous habits; the underlying cause of aggression must be determined before the problem can be solved. A medical, hormonal or physiological reason is often behind aggressive behavior in horses.