This datapack makes Zombie Horses spawn in the animal pens or stables of Zombie Villages.
While Skeleton Horses were made obtainable in 1.9, Zombie Horses werent so lucky. They have been an unused mob ever since they were added. By making them able to be found naturally in the world in a fitting environment that makes sence also gives a reason to search for abandoned villages that were previously also not very useful
Additionally within these villages, Zombie Horses can spawn as Normal types, Babies or ridden by Zombie Villagers with enchanted iron gear.
They can also be ridden by the player and have been made to not dismount from them underwater to match the skeleton horse behaviour