finaly at home. Here is a way how to 2pet this 3 Legendary and how you can level your pets.
You need this pet Teroclaw Hatchling
ability set: (1,2,2). Can be found in Draenor, or in AH.
Then another 25 Level pet of your choice(something with speed greater then 319 is very nice eg: Flayer Youngling s/s 2,2,1) or a second Teroclaw Hatchling, prefferably with a beast attack. Your carry pet, which should have at least around 400hp(more if its a wild type pet) because the first enemy pet uses an aoe sucide for around 311 mech damage.
You Start with the Teroclaw Hatchling:
3. Nature´s Ward
6. Dodge (Here the Blingtron should be below 350 Health and use his Suicide Ability)
(Second Pet comes in)
8. Nature´s Ward
11. Dodge (enemy pet around 350 or below uses Ioncanoon and is stunned for two rounds)
12. Claw (if the second enemy pet already triggerd his mech special ability/resurrected skip this turn)
13 Nature´s Ward (renew this before finishing second enemy pet)
14. Claw (finish second enemy pet)
(third enemy pet comes in)
17. Claw(Here the third pet should be below 350 and uses Ioncanon which stuns him for two rounds)
18a. and 19a Claw: go just for the win (without leveling a carry pet)
18b. Swith Carry pet, use an Attack and switch in your Second lvl25 Pet to finish it off.
enjoy and have a nice day