How do horses defend their territory?
they rear and buck the other horses, so keep your distence when near horses fighting because you might get hurt. the back legs can hurt you but the front legs can kill you
They run in large circles. They also will paw the ground while looking at other horses and snake their necks. If push comes to shove they will turn their heel on any horse they dont want in their "territory" and if push comes to shove they will kick, stike and bite to defend it, be it a feed bucket in a paddock, or a wide open plain in the west, the behavior is the same.
An animal will defend its territory to protect its resources. Two important resources for animals are food sources and suitable mates. If an animal wants to eat and breed it must defend these limited resources from rivals because, like any habitat, a territory has a carrying capacity : a maximum number of animals that can be supported by the habitat.