Did Graham loose his key?

Hello jammers I have found out his mystery of graham's key.

In a picture with snowyclaw from the animal jam spirit blog she has a photo of Graham with a key.

                                                                                                       And in adventures you find him with no key on his tail. Is there a story behind him loosing his key or did animal jam decide they didn't like it on him? What kind of secrets does that key hold? It's weird and eerie to think what might of happened to it.