Will Tamed Horses Despawn

Tamed animals don’t despawn.

Do skeleton horses Despawn Minecraft?

The skeleton trap horse becomes fully grown if it was a baby, and the breeding cooldown is reset. The skeletons do not despawn if PersistenceRequired is set.

Why do tamed horses Despawn?

While playing the game, in both creative and survival mode, when I have moved away from the pen about 150 blocks, then return, the horses can and do despawn. If the horses are wearing armor, they do not despawn. This makes breeding horses a bit of a problem (as in nearly impossible).