horse herd

Horses will sacrifice themselves for the herd, which is one of its noble virtues. When the horses are a little tired from being chased by carnivores, an old horse in the herd will stop and become food for the predators, sacrificing himself for the horses The swarm's escape extended the time.
In a herd, horses at different levels receive different care, with ponies being the most closely guarded, often in the middle of the herd, followed by mares. Young and strong stallions and fillies take care of the ponies.
And the most unlucky and most vulnerable, the old horse with the least concern stands on the outermost layer, doing the job of sacrificing himself at any time and protecting other horses; while the male leader will lead the team at the top, and the female leader will check the enemy's situation after the break. The enemy, neighing and then running faster, while an old horse will stay behind as a bait to trap the predator. Buy time for the horses to escape.