Oh no! None of your pets are eligible for battle. You might want to make sure that they're well fed and happy!
My battle pet is well fed and very happy.Is there something wrong with the Bc just now
Mine is fine, only things I can think of are make sure you aren't currently in a battle and make sure your pet is healed. If you've been burning items and getting burned by the red rreign, it's easy to forget.