What is zombie horse in Minecraft?

Zombie horses spawning in areas above light level 0 I have an enclosed village with lights that all turn on at night, the entire village is lit up enough to where mobs have never spawned in the walls. After the mounts of mayhem update I noticed zombie horses spawning inside my walls.. The horse armor is surprisingly a key item to have when planning to tame a zombie horse, as without it, the zombie horse will burn in sunlight, just like most undead mobs. How do I get horse armor?

Zombie horses can only spawn at night in the plains and savanna biomes in Minecraft. To tame the zombie horse, players must first defeat the jockey and feed it red mushrooms. Lastly, players can use a saddle to ride and control the zombie horses in Minecraft.. A zombie horse is an undead variant of the regular horse. Zombie horses appear to be the horse equivalent of zombies. Like zombies, zombie horses are green-skinned and their eyes are completely black. Zombie horses spawn naturally in plains, savannas, snowy plains, ice spikes, etc. in the form of a zombie horseman jockeys. Zombie horses may be created by the /summon command, with their spawn.