Zombies are common undead hostile mobs that are hostile toward players, villagers, wandering traders, iron golems, snow golems, and baby turtles. They also stomp on turtle eggs. They burn in sunlight, similar to most other undead mobs. Also, like all undead mobs, the Instant Health effect damages them, and Harming heals them. They are the most common monster in Minecraft.

https://minecraft.fandom.com/wiki/Zombie

1.14 18w43a The textures of zombies and baby zombies have now been changed.