The Shelter Has Decided To Solve This Case
When Stacey arrived at the shelter she was surprised to see that no one seemed to be angry at her. Instead, they told her that when they had received the call, they had started their investigation. The employees had started making calls to all the previous owners to see if this behavior had developed with Stacey or if had it been present with them too.
If an animal has a fixed behavior pattern of aggression and violence, then there will be other incidents too. None of the previous owners had previously reported such incidents when they returned Benji but this time when the shelter called, they revealed it all.