How do horses act when determining superiority?

When determining superiority, horses engage in a variety behaviors and displays to establish dominance and hierarchy within a herd or group. These behaviors are often referred to as "leadership" or "dominance rituals" and can vary depending on the individual horses and the context. Here are some common behaviors observed during horse dominance interactions:

1. Challenging Stance: A horse may adopt an assertive stance, such as standing tall with ears forward, nostrils flared, and head held high. This displays readiness and confidence.

2. Threat Gestures: Horses may engage in bluff charges or "mock fights," where they approach each other with exaggerated movements, such as kicking out their hind legs or stomping their hooves. These gestures are often a show of strength without actual physical contact.

3. Biting and Nipping: Horses may nip or gently bite each other's necks, shoulders, or rumps. These light bites serve as reminders of hierarchy and can be used as a form of correction or to deter certain behaviors.

4. Displacement Behavior: Horses may attempt to displace a lower-ranking horse from a desired location or resource, such as food or water. This can involve chasing, pushing, or guarding the resource.

5. Grooming Rituals: Mutual grooming is common among horses and serves multiple social functions. High-ranking horses may demand grooming from lower-ranking ones, symbolizing their dominance.

6. Head and Tail Positions: Horses use body postures to communicate status. A horse with a high head and tail carriage often exudes confidence and dominance, while a lowered head and tail may indicate submission or respect.

7. Vocalizations: Horses produce various vocalizations, such as whinnies, snorts, and squeals, to communicate with each other. Dominant horses may use certain vocalizations to assert their position.

8. Eye Contact: Horses pay attention to each other's eyes to gauge responses and intentions. Direct eye contact can be confrontational, but brief glances may indicate recognition and respect.

9. Kicking and Striking: In some cases, dominant horses may engage in more aggressive behaviors, such as kicking or striking with their hooves. These actions are typically used to reinforce their superior position or to discipline subordinates.

10. Chasing: Assertive horses may chase lower-ranking ones as a means of asserting dominance and establishing boundaries within the herd.

It's important to note that dominance interactions among horses can be subtle, and hierarchy is not always straightforward linear. Horses may show dominance in certain situations but defer in others, and their behaviors can be influenced by factors such as age, sex, breed, training, and individual personalities.