Mini Goats/Sheep Can Use Pet Doors

Imagine my disappointment when our mini sheep and goats couldn't use the pet doors from Cats & Dogs! Well, here's an override that fixes that!

Tweaks the tuning of the mini Goat and Sheep and adds an override, so will conflict with any recolor or other tuning overrides of these guys. Please note I did not add the Mini Goats/Mini Sheep options to the door lock feature! That requires changing the door tuning itself, this just adds Pet Doors as acceptable portals for the goat+sheep tuning!!