Bedrock AI Add-on for Minecraft PE makes your game more closer to Java Edition. Now behavior of mobs will be like in Minecraft Java Edition. You will see new models, AI and animations for some entities.
What exactly will be new?
There are a lot of changes. For example, you will see new models of mobs (vindicator, villagers), new sounds, adds Illager Beast, new color of nature, textures and so on.
some screenshots from this addon you can see below this text
download this addon for Minecraft Pocket Edition 1.9 +