Frozen dogs and REs

I've had it happen twice now, and it's rather bothersome. An RE happened that detracts from the health from my frozen dogs. I don't really want to unfreeze them, since that would cause them to age.

So, onto my suggestion. REs good or bad, should not happen to dogs that are frozen. Or at least have it be made so that one can heal them without unfreezing them. Seems a tad unfair to have it so they can be harmed while frozen, but not healed.