My pet is fully healed, fed, happy, and is not stuck in a current battle. Nevertheless, I am being told that none of my pets are eligible for battle. Help please?

Did you acquired your pet recently? There is a "new" rule where your pet needs to be in your account for at least 1 month before it can battle.

I was unaware of that, but no. I've had my battle pet quite a long time.

It's probably a bug then, sorry, wish I could help more. Good luck!

Try hard refreshing. :)

Thanks for the idea, but it's one of the first things I did.

Odd. Guess you'll have to file a ticket. :/ I can't think of any other reasons you wouldn't be able to battle.

Pet happiness has been glitching lately; pets will be at 0 happiness even with minions attached. You might check to see if that's the case. If not, then definitely file a ticket!

Samm is exactly right. I filed a ticket and my pet's happiness is 0 despite having a minion attached. I was told to put my battle pet in the resort and add my info to an ongoing thread in the bug report forums.