All pets now have an inventory GUI which can be opened by sneaking and right clicking. If the pet is a mount and you are riding it, you can also open it's inventory by pressing G (by default, changed in options).
All pets are able to carry various items and if equipped with a chest, they will gain a small bag for you to store extra items. The size of the pet's bag varies depending on the pet. Erepedes have the largest item storage with a size of 15 slots.
There is an issue that I will fix eventually, if you add a chest to a pet with the GUI open, you must close and reopen the GUI in order to see the new storage slots on the right.
Fixed a compatibility bug with other mods that try to get the armor value of mobs from this mod. This fixes crashes with a lot of mods form Morph to Iguana Tweaks and probably a lot more!