Peanutty wrote:The easiest way to remember it is, the 5 tamers above are the "end boss" for each area/expansion (Kalimdor & EK for vanilla, then BC, WOTLK, Cata).
This is how I managed to remember the non-Pandaria trainers that reward bags. I consider them "Grand Master Trainers" since they are the last NPCs you battle for each continent.
Another way to keep track is by using the addon Battle Pet Daily Tamer
. It highlights on your world map where each Trainer daily is, and indicates the ones that reward the bag with a green paw print (as opposed to dailies that don't reward the bag in blue). It makes things SO MUCH more convenient, I still use it even though I have the "Grand Masters" memorized.