- Can't add companion to my journal or collection
- Error when attempting to learn pet: "This spell is not available to you"
- Purchased a pet in the auction house that gives the message "Can't add companion to your account."
To learn a pet, you must have at least another pet of the same level or higher.
You cannot learn a level 25 pet if you don't have at least one level 25 pet of your own.
If you caged your only level 25 pet, you won't be able to un-cage it until you have leveled a different pet to 25.