Returns pet species and GUID by pet name.
speciesId, petGUID = C_PetJournal.FindPetIDByName("petName")
- string - Name of the pet to find species/GUID of.
- number - Species ID of the first battle pet (or species) with the specified name, nil if no such pet exists.
- string - GUID of the first battle pet collected by the player with the specified name, nil if the player has not collected any pets with the specified name.