I was trying to challenge and opponent in the battle coliseum, but for soem reason i get the message "Oh no! None of your pets are eligible for battle. You might want to make sure that they're well fed and happy!" under each opponent. the problem? he IS well-fed and happy... so yea, anyone have any ideas what do do, or what it could be?
Check if your pet is already in a battle by clicking here. Also, check if your pets are healed.