Wyvern not using elemental breath

[Kristal]

This cannot be true. If a wyvern uses an elemental breath that would heal an enemy, then the wyvern would gain the HP, not the monster. You can test this via puks.

First time I've heard DRG pets doing that.. and I would call it a major bug... the breath should cure the target, not the pet.
Perhaps SE stealth-fixed it so it won't use breaths at all in absorb situations.

Could you see if your pet still cures itself with Gust Breath on puks?