As an expert in the field of Minecraft game mechanics, I can tell you that taming animals in Minecraft is a specific process that varies depending on the type of animal. However, as of my last update, taming is not a feature that applies to bats in Minecraft. Bats are not domesticatable creatures; they are ambient creatures that spawn in caves and do not have a taming process. They were introduced to the game primarily to add to the atmosphere and to provide a more immersive experience for players exploring dark areas.

read more >>

As for taming a bat I don't believe there is a way in vanilla Minecraft. There are ways to catch a bat and place it in your house so it looks tame, but that would be for looks. I don't believe you can tame bats, but you should be able to tame ocelots with fish. Reference the Minecraft Wiki for more information.read more >>