Salus wrote: I'm curious what new (post-WoD release) battle pet people are finding they use the most?
Oh... so... many... answers. I really like most of the pets already listed here: I have a S/B and P/P Ore Eater, both of whom can be very strong for reasons already stated; the S/S Bronze Whelpling is such a durable sweeper with the stun and the avoid; the Teroclaw Hatchling just keeps on living on; the Servant of Demidos often stuns and kills pets before your opponent has time to blink; and my S/B Sister of Temptation is surprisingly tanky for a lady in such skimpy clothing.
However, of the pets no one mentioned yet, for me it's a tie between the Lovebird Hatchling and the Frostwolf Ghostpup. The Hatchling has a stun, and with 325 speed can often make use of the extra damage attack in slot 1, and Predatory Strike has won me a couple of close pvp battles lately. The Ghostpup has a nice AoE heal, a spammable attack which is strong against Undead which you see so many of in the pvp queue, and a nice nuke for when you really need it.
This is mostly for pvp purposes though. For carrying pets against the trainers, I just use the setups I had prior to WoD, since, you know, why change something that works?