SCP 939-53
The mod “SCP 939-53” introduces endothermic predators into Minecraft, capable of eliminating all living beings in their vicinity. Over a few days, the animal population worldwide may drastically decline. If you encounter them, it’s advisable to flee, as your chances of defeating them are slim.
The most effective way to defend against these monsters is through fire. 
If you’re playing Minecraft in survival mode, it’s best to avoid engaging with SCP 939-53, as you won’t be able to overcome it. 
The size of this mob is significantly increased due to its mutation.
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Установка SCP 939-53 (.mcpack)
- Download the mod labeled as “.mcpack” from below.
- Run the downloaded file to import the add-on/texture into Minecraft.
- Launch Minecraft Pocket Edition and navigate to the world settings.
- Set the imported options for the world:
— Resource Packs.
— Add-on Packs. - Select the imported resource packs/add-ons in each section.
- It is recommended to restart the Minecraft PE client afterward.
- Open Minecraft Pocket Edition, enter the previously configured world in Minecraft, and enjoy the add-on!