How does a horse physically respond to stimuli in its environment?

Horses respond to stimuli in their environment through a combination of sensory perception and physical reactions. Their keen senses, particularly sight and hearing, allow them to detect changes around them, triggering a fight-or-flight response. This response can manifest in various ways, such as increased heart rate, heightened alertness, and physical movements like fleeing or freezing. Additionally, horses may exhibit behaviors such as snorting, stomping, or shifting their weight to express discomfort or curiOSity.