This list is designed for those new to the PvP pet battle scene. Keep in mind that this should be used a starting point only. After you get the hang of pet battling you can explore your own ideas and synergies. The next top team is out there waiting to be discovered!
Here are my definitions of the tiers:
1st tier – You can build a team around these pets and expect to win often with the right support. I like to think of these pets as being able to carry lesser pets to great win rates.
2nd tier – These pets are not quite as good as the 1st-tier pets. You can still build a successful team around them, but due to certain constraints they will be not be able to single-handedly carry a team to success like the 1st-tier pets.
3rd tier – This is a general catch-all for the good PvP pets. Some will do better than others in certain situations.
* – denotes a pet that might not be great on its own, but can be very good with certain synergies.
S/S Fiendish Imp
S/S Bronze Whelpling
Curious Wolvar Pup
P/P Emperor Crab
Ghastly Kid* (Consume Corpse, Haunt n’ stall)
Graves* (Consume Corpse)
S/S Nightshade Sproutling* (darkness)
H/S Scalded Basilisk Hatchling
S/S Wicked Soul
P/P Blackfuse Bombling* (Righteous Inspiration/Armageddon)
Blossoming Ancient* (sunny day)
S/S Darkmoon Rabbit
Death Adder Hatchling
Fragment Of Anger
Gilnean Raven/Crow* (darkness)
Infested Bear Cub
Jademist Dancer* (clonedance)
Mechanical Pandaren Dragonling
Murkalot* (Righteous Inspiration/Armageddon)
Nether Fairie Dragon
Servant Of Demidos
Singing Sunflower* (sunny day)
Snarly, Toothy, Muckbreath, Chuck* (bleeding)
Son Of Sethe
Son Of Animus
Relevant synergies and combos
Clonedance – apply Cyclone the buff its hit and critical rate with Rain Dance.
Consume Corpse – use Haunt, when pet is Haunting it is considered dead, use Consume Corpse to heal. Can be done repeatedly.
Darkness – use Call Darkness to increase hit chance of Nocturnal Strike.
Haunt n’ stall – use Haunt, then Dodge, Feign Death, Burrow, etc. so that your opponent can’t hit you while taking damage from Haunt.
Minefield swap – use Minefield, then use a swap move like Nether gate or Sweep to force your opponent into the mines.
Righteous Inspiration/Armageddon – use Rightous Inspiration on a P/P Blackfuse Bombling. Armageddon will now go first and do over 2100 damage if not avoided.
Sunny day – use Sunlight to turn the weather into Sunny Day. Photosynthesis will now heal for two ticks per turn instead of one.
Righteous Inspiration – see above
Traps – stuns, interrupts and does damage all at the same time. Detonation round is random unless forced by an obstacle clearing move or a wave.
Bleeding – use Rip or Woodchipper to apply the bleeding effect. Maul then does an extra attack and Blood In The Water has a 100% hit chance.
Conflagrate – Conflagrate does extra damage is the target is burning. This can be achieved by Scorched Earth, Flamethrower, Immolate, etc.
Mana Surge – Mana Surge hits an extra attack with the weather is arcane winds. Nexus Whelplings are the most commonly used pets for this synergy.
Here is a link to the WoD tier list: