GigaMobs
The mod «GigaMobs (Giant Mobs)» significantly alters the physical attributes of numerous existing mobs in Minecraft Pocket Edition. Giant chickens and pigs may have only existed in your dreams, but with the installation of the GigaMobs add-on/mod, these creatures will come to life in the world of Minecraft PE. Once you install the mod GigaMobs, animals and mobs will be transformed into enormous giants. You can even ride some of them, such as horses.
Even though Godzilla is massive, you can still ride on her back. Just make sure that third-person view is enabled before mounting Godzilla, and it’s advisable to set your field of vision to maximum.
The horse has also been greatly enlarged. Not only are its dimensions significantly increased, but its stats have changed too. Now, giant horses possess much more health and are faster. They can also leap over hills and small mountains when they jump.
Bunnies and chickens have also been scaled up. You can ride these mobs as well. Keep a carrot [for bunnies] and seeds [for chickens] to control them.
Avoid playing around with creepers. Their explosions have been amplified to cause even greater destruction in Minecraft Pocket Edition.
You can tame a skeleton by enticing it with a bow. Once tamed, it transforms into a Wither Skeleton. It will follow you and protect you from hostile mobs attacking you.
Giant polar bears:
New mobs for version 1.1 are now larger as well. This applies only to users on version 1.1.
Here’s a list of all the mobs. Most of them have increased health, especially the hostile ones.