I usually don't have troubles with Dark Gazer when using the modified Howl Bomb sequence. Tonight Dark Gazer had a nasty 2nd pet, a rare P/P Tree Python. It killed all my pets (Pandaren Water Spirit, Chrominius, Emerald Proto-Whelp) repeatedly and effortlessly. Frustrated, I went to Wowhead and found this strategy by Zlanya:
A Grotto Vole (P/B) can solo the Gazer.
3. Scratch 2x - Gazer's dead.
4. I continued like usual with Chrominius + Emerald Proto-Whelp.
My H/B Grotto Vole couldn't quite finish it but I wouldn't have had problems continuing with the other two pets. I then did some research with Rematch. The only other pet with that ability combo was Whiskers the Rat which actually worked wonderfully, and it has slightly more hp than a P/B Grotto Vole so that's a nice safety bonus.
Mouse, Carrion Rat and Fjord Rat have Poison Fang that might work with a P/B (or P/S) breed, which have the same amount of power as P/B Grotto Vole or Whiskers (273). Then there's Giant Sewer Rat that definitely has power!
I'll be using the strat in the future because it's so fast and seems quite reliable. And because it's nice to also have teams that aren't just PWS+Chrom+EPW. Maybe someone here will like this too!