Mostly, they just run like hell. Also they avoid places where they've learned their predators tend to lurk in, and at all times they keep their eyes, ears and noses on high alert. read more
Despite being prey animals and largely domesticated, a scared horse should be treated like a wild animal until it calms down. While a horse's body language can vary, it generally indicates panic or fear by running, sometimes attempting to leap paddock fences in an effort to escape. read more
Stallions and horses in general can run, yes, but also can bite and kick with great skill. Predators will not attack a fully grown healthy wild horse. Even our own domestic horses are fully able to protect themselves. read more
Horses are prey animals and survive in the wild mostly through remaining alert to their surroundings and running away if they notice any danger. They quite fast. read more