Ezra Grimm

I used the following:
Rabbit (H/B Breed), an Elfin Rabbit (S/B Breed) and a second Rabbit (H/S Breed) and won with a pitiful 20HP remaining using this strategy.
Other breeds may work, but this is what I had.

Start with Rabbit (H/P)
Turn 1: Dodge to avoid Scorched Earth
Turn 2-4: Stampede
Turn 5: Flurry
Turn 6: Flurry, Smokey dies. Pyro comes in
Turn 7-8: Stampede. My Rabbit died here
Bring in Elfin Rabbit (S/B)
Turn 9: Dodge to avoid Elementium Bolt
Turn 10-12: Stampede
Turn 13: Flurry
Turn 14: Flurry,
Turn 15: Flurry. Pyro dies, Infectus comes in
Turn 16: Dodge to avoid Elementium Bolt
Turn 17-19: Stampede, Elfin Rabbit dies, Bring in Rabbit (H/S)
Turn 20: Flurry
Turn 21: Flurry
Turn 22: Flurry
Turn 23: Dodge

This is the only strat that worked for me and worked on first time using common pets with any breed.

Credit for this strat goes to DragonAfterDark from wow-petguide.com. Original guide located at https://www.wow-petguide.com/index.php?Strategy=5906.

Pets used are:
Unborn Val'kyr - 2 2 1- Any breed
Macabre Marionette - 1 1 1 - Any breed
Coastal Scuttler - 2 1 1 - Any breed

This is a direct copy and paste from guide at the link listed above:

**Note** The whole idea for the UBV hitting with the Shadow Shocks, is to get her as low on HP as possible before using Haunt, because she needs to die on the first hit with the last enemy pet.
Macstallion's comment in the comment section details how they did the fight with a B/B Unborn Valkyr--thank you Mac! Set your comments to Show First: Highest Rating, and it should come right to the top.

Turn 1 - Shadow Shock
Turn 2 - Curse of Doom
Turn 3 - Shadow Shock
Turn 4 - Haunt

Bring in your Macabre Marionette
Turn 1+2 - Dead Man's Party

Pyro comes in
Turn 1 - Dead Man's Party continues
Turn 2+ - Macabre Maraca until Pyro dies

**Note** If Macabre Marionette dies both times with Pyro, DO NOT PASS turn 1 on Infectus. You'll bring in your Unborn Val'kyr, and Shadow Shock or Curse of Doom if it's off CD on her first turn.

Infectus comes in
Turn 1 - Pass from stun

Bring in your Unborn Val'kyr
Turn 1 - Curse of Doom
Undead - Shadow Shock

Bring in your Coastal Scuttler
Turn 1-3 - Stampede
Turn 4 - Bubble
Turn 5+ - Frost Spit until Infectus dies

This is what worked for me:
Chrominius (1,1,2)
Flayer Youngling (1,2,1)
Mechanical Cockroach (2,1,2)

Don't know about breeds, but the stats were:
Chrominus 1644 HP, 276 power, 260 speed
Flayer Youngling 1400 HP, 260 power, 325 speed
Mechanical Cockroach 1587 HP, 260 power, 293 speed

Start with Chrominius. Use Bite, Howl and then Surge of power. Chrominius dies.
Send in Mechanical Cockroach. Use Apocalypse and then Zap. Smokey dies.
Switch to Flayer Youngling. Start with Kick. Use Deflection to counter Elementium Bolt. Use Kick whenever it is off cooldown, otherwise use Blitz. Pyro dies.
Use Deflection or Kick against Infectus. Flayer Youngling dies.
Send in Mechanical Cockroach and use Warning!.