That is one of the saddest things I have heard in a while.  All I can say is I hope that whoever took Gummy has a change of heart and brings him back.  Sadly, that probably won't happen but perhaps a reputable breeder will read this forum and donate a puppy to this little boy, it won't be Gummy but maybe it will help.  I am praying for these people.  I just don't know what possess people to act like they do