In Minecraft, there is a rather meager variety of animals and the mod will fix this defect in the mobile version of MCPE on the phone. 

A few dozen new animals will appear in your world, not only predators, but rather peaceful creatures. New mobs created on the basis of real-life animals, they can only be found in suitable biomes for their comfortable life.

Youtube video - Review mod

How to set Mods Minecraft PE?

• Open file manager Android
• Through file manager for open the folder in which the .mcaddon file is located and launch it, Minecraft will open automatically and you will see at the top of the game screen that the addon is being imported.
• After successful import, go to settings Minecraft map
• Next step - Activate Resources and Behaviors
• Activate experimental gameplay in Minecraft Bedrock Edition game settings

Download from Google Drive