So the heroic table selects Teroclaw for 4 fights (Unfortunate Defias, Cookie's Leftovers, Klutz's Battle Rat, Mining Monkey)... Anyone have a substitute for one fight?

I just did it with 3x Teroclaw. When I got to the last boss (Cookie's Leftovers), they all had 100% HP. So don't worry.

Yeah that's how it went for me! :) I think I also moved some fave strats around for it to give me the all clear!

Just a note -- you no longer get a bottlecap for the initial normal run. Instead, you're given an ultimate battle-training stone, which means you'll have to run the dungeon an extra time now.

That has always been the case.

I have only run the Deadmines Pet Battle four times so not a large test sample, however, even with the nerf to the Terowclaw Hatchling I have still never lost any of the pets battle using the suggestion on this website and I do it on the "Challenge Mode". A few fights I had to be creative maybe finish off the fight with a third pet and move the Hatchling to the back row with Nature's Ward active to help it heal up or make sure you use Ravage to kill one of the opponents. I have also never used the Dodge move set. Yes some battle dialogues need to be updated but you should still be able to complete the achievement with what is listed on this page. WELL DONE.

Worth noting, after you finish the initial quest (The Deadmines Strike Back), you learn Manaproof Link: Westfall. You can visit Manaproof in Breanni's shop in (legion/new) Dalaran, and he can port you straight to Westfall.

Throughout this dungeon, you will see Teroclaw Hatchling and Anypet as your 2nd and 3rd options. Pick pets with Wish as your 3rd option. I prefer the Hyjal Wisp with Evasion and Wish. The evasion allows you a round of freedom to cast wish if when need it. It also allows you to dodge things like Whirlpool. Also remember, park your Teroclaw on low health but with Nature's Ward active. NW still heals it on the bench. Between Wish and NW, you should never lose your Hatchling.

Other pets with Wish, Celestial Calf, Magic Lamp, Magical Crawdad and Zao

It's not obvious but you'll need to be level 110.
The breadcrumb quest in Dalaran was unavailable to my 106, and despite the following quest being account-wide, the 106 was unable to queue for the scenario. Just a heads up.
My 110 is just fine.

Best site I have found! Only thing better would be an in game add on that lights up the ability we need to use next. Love this place, and the people that use it. We all work together to make killing these pets so much easier.

Or even better, the addon called TDBattlePetScripts :D
Check out this post for instructions how to use it: https://wow-petguide.com/index.php?m=1&jumpto=101

This link seems not valid anymore, it sends to main general page, could you update please? I would like to read some info :)

Hey! Yeah the page upgrades made this link invalid by now. An article explaining TDScript is in the works, but not online, yet. This might help:
https://www.reddit.com/r/wow/comments/6chdrl/a_guide_to_scripting_repeatable_battle_pets_with/

You didn't mention that you also get a mining monkey pet for completing the dungeon

Firstly and most importantly, thanks for an amazing site, I really appreciate the hard work that must have gone into it.

I think we need to have some alternative strategies up for the challenge mode, Teroclaw Hatchling is used 6 times but we can only have 3 of them.

Hey!
The challenge mode is for now a setup purely from my side, how I went through it fine. The non-challenge mode will (as far as there's a need and I get suggestions) host more alternatives.
When it comes to the Teroclaw, the way it is used here means it will come out of those fights at full health :-) I only have one and the strategies work fine with just one. Give it a try, you might be surprised :-)

I knew the Teroclaw was awsome, I hadn't realised it was that good lol. Thanks, I'll give it a go :)

I understand you have your guide up, but I like to try my own things, this set up is 100% success, I have used and done this 2 weeks running and not even close to a failure.

"Captain" Klutz:3KJG:121316M:21171A7:22161IM:
Angry Geode:3KHE:11281H0:122919C:222814F:
Cookie's Leftovers:3KJF:1225QC:111818O:222814D:
Foe Reaper 50:3KJH:2213170:22131NH:21181BK:
Klutz's Battle Bird:3KHG:2226140:12281LQ:2129ME:
Klutz's Battle Monkey:3KHH:1117AI:12281LQ:2129ME:
Klutz's Battle Rat:3KHF:212415R:12241LQ:2129NH:
Mining Monkey:3KHD:12141BB:11131HI:222414F:
Unfortunate Defias:3KHI:121B1NI:222814F:222616I:
Foe Reaper - Ironbark, Photosynthesis, Stun Seed; refresh Photosynthesis @ 1 round left, keep Stun Seed on CD, Ironbark for the easy win.
Unfortunate Defias - Normal Rabbit strat, Dodge, Scratch, Burrow, Keep Burrow and Dodge on CD, there is a round where Dodge is usable but Unfortunate Defias is stunned so free Scratch, then repeat strat, Clean up crew is up to you.
Angry Geode - Water Jet, Dive, Nature Ward, Spam Water Jet, Use Dive on CD, Refresh Nature Ward @ 1 round left unless it is round to Dive. Clean up crew is up to you
Mining Monkey - Toxic Smoke, Wind Up, SuperCharge, Wind UP, Toxic Smoke. Clean up crew is up to you.
Captain Klutz - Curse of Doom (when available to, will get stunned this is ok, just pass till Curse of Doom is cast), Haunt, Bring in Macabre Marionette, Death and Decay, Dead's Man Party
Klutz's Battle Rat - Black Claw, Hunting Party. Clean up crew is up to you.
Klutz's Battle Monkey - Shock and Awe, Missile till Shock and Awe off CD, Repeat. Clean up crew is up to you
Klutz's Battle Bird - Arcane Explosion x 3, Ancient Blessing, Repeat and keep Ancient Blessing on CD, Clean up crew not needed. Chrominius Solos this fight.
Cookie's Leftovers - Decoy, Breath till you fall asleep, bring in Nexus Whelping, Breath till win or if it dies, bring MPD back, Breath
If you don't use rematch to import and auto load teams - These are my teams/Set up. My moths/proto-whelps/dream whelplings are my clean up crew. 1 fight where i use lesser voidcaller as clean up crew to same effect .Also some pets are not used just in team eg Yu'la
Foe Raper 50 - Blossoming Ancient - 2,2,1; Broot - 2,2,1; Crazy Carrot - 2,1,1
Unfortunate Defias - Dust Bunny - 1,2,1; Emerald Proto-Whelp - 2,2,2; Lesser Voidcaller - 2,2,2
Angry Geode - Puddle Terror - 1,1,2; Ashwing Moth - 1,2,2; Emerald Proto-Whelp - 2,2,2
Mining Monkey - Iron Starlette - 1,2,1; Cerulean Moth - 1,1,1; Emerald Proto-Whelp - 2,2,2
"Captain" Klutz - Unborn Val'kyr - 1,2,1; Macabre Marionette - 2,1,1; Grotesque - 2,2,1
Klutz's Battle Rat - Zandalari Anklerender - 2,1,2; Dream Whelpling - 1,2,2; Garden Moth - 2,1,2
Klutz's Battle Monkey - Darkmoon Tonk - 1,1,1; Dream Whelpling - 1,2,2; Luyu Moth - 2,1,2
Klutz's Battle Bird - Chrominius - 2,2,2; Dream Whelpling - 1,2,2; Luyu Moth - 2,1,2
Cookie's Leftovers - Mechanical Pandaren Dragonling - 1,2,2; Yu'la, Broodling of Yu'lon - 1,1,1; Nexus Whelping - 2,2,2

Super tactic and team. Worked 100% - 6 more weeks to go :)

Great guide as always. My breadcrumb came from Breanni in Dalaran. You might also want to change the wording slightly from "When you beat ..." to "If you have beaten ... " Looks to me like it was written by someone who has German as their first language :)

It was indeed ;-) Thank you for the edits, much better!

I studied German at university!

Can't believe this is up all ready. It seems a little too easy. First run through, I have not healed at all. Used all your strats, used the same teroclaw for all fights, didn't even use him on the last one. Thank you.