Another trick I've used is to use a Mechanical Pandaren Dragonling and cast Decoy. Since it goes for 2 turns you have time to swap in your leveling pet and swap it out to your level 25 since the Decoy will protect it from being hit. The only trouble you'll have is with pets that can damage the back ...

I use Mechanical Pandaren Dragonling (Decoy), Lil Ragnaros (Sons of Flame), and a carry pet. Yesterday I had decent RNG and almost soloed him with just MPD alone.

Hi, First of all thank you for the strategies in this post. I'm working my way up trying to collect all the pets necessary to execute the strategies listed here and am making a shopping list. You have listed the Proto-Drake Whelp and Sunreaver Micro Sentry but I don't seem to see those two pets list...