The realistic mobs addon pack adjusts the sizes of mobs in Minecraft Pocket Edition. This pack aims to give you more realistic size mobs, the noticeably different ones are spiders. The spiders have been made very very small. Other notable changes are to the enderman who has been shrunk to be the same size as the player and the Iron golem. Personally I think the Iron golem should have been made bigger, as he is a guardian! He should be big and mighty and ready to protect the villagers!
Realistic Mobs Addon Showcase: