Here's why:
* Focus: Horses often point their ears back when they're paying close attention to something behind them. This could be a sound, a movement, or even a smell.
* Anxiety/Fear: If a horse is anxious or scared, they may also flatten their ears back as a sign of defensive behavior.
* Concentration: Horses may flatten their ears when they're concentrating on a task, like eating, grooming, or working.
To understand the horse's emotion, you need to look at other body language cues:
* Body posture: A tense body, raised tail, or pinned back legs can indicate fear or anxiety.
* Facial expressions: Snorting, lip-licking, or dilated pupils can also reveal emotional state.
* Context: Consider the environment, the horse's history, and your relationship with the horse.
In short, pinned-back ears are a sign of alertness and focus, but not necessarily a specific emotion.