Some quirks of mob stacking

This is a small thing (not sure if breeding passive mobs will be worth it in terms of economy) but making note of this. (not sure if this is unique to Factions or also the case in RPG) It appears that mob stacks (2+ mobs in 1 entity) can naturally spawn, at least for passive mobs The strange thing is that this is the ONLY way in which a breedable mob stack can exist (as mob stacks from spawners are not breedable). If you breed a mob stack, the baby mobs do NOT appear to stack. If you want a breedable 4x stack for example, it's not good enough to find natural cows and breed them, you HAVE to find a 4x natural cow.