Returns a formatted string how many of a battle pet species the player has collected.
ownedString = C_PetJournal.GetOwnedBattlePetString(speciesId)
- number - Battle pet species ID.
- string - a description of how many pets of this species you've collected, e.g. "|cFFFFD200Collected (1/3)", or nil if you haven't collected any.
Patch 5.1.0 (2012-11-27): Added.