When eyeing a predator, horses keep a poker face as their hearts race

Scientists showed horses silent videos of wolves and found their hearts raced even when they showed no obvious fear, raising new questions for riders and handlers

Horses exhibit an intriguing phenomenon when identifying predators on video screens—they experience heightened heart rates indicative of internal stress while showing no outward signs of fear. Notably, male horses and dominant herd members trigger stronger responses, challenging traditional views of prey animals' panic-driven behavior. Grasping this psychological disconnect is essential for improving horse welfare and ensuring rider safety.

When eyeing a predator, horses keep a poker face as their hearts race

Horses know a predator when they see one—even if it's only on a video screen while they're standing in a stall, with no sounds, smells or previous experience providing context for what they're viewing, a new study suggests.