So I finally got to 80 on my hunter, and shortly thereafter got the pet I'd been using to level with to 80 as well, but now I have 4 pets in the stables (2 of which I use for groups and raids) that all need to be leveled up to 80 as well. In BC I used to go down to SMV and farm marks of Sargaras to level pets, since there were a lot of mobs in a small space and they respawned fairly quickly.
I'll probably take the same tactic this time around - find something to farm and level my pets at the same time - but I was curious what everyone else does. Do you take the grind/farm route, or do you just continue questing and switch pets as they level? Or do you do something else entirely?