Pet Buff Order?
 

Do pet buffs stack top to bottom like player buffs?

If you want to use a charmed pet against an npc that dispels will beneficial buffs remain when charm is broken? (i.e. charm, stack beneficial buffs, break charm, aggro with detrimental buff to take top slot, then re-charm)

yes they stack, unfortunately until luclin you cannot see them though, but try to remember the order.