Well, it's come down to a food bribery but we have reached a new stage. They can be in the same room without the growling or the hissing
Of course, this is only effective when food is around.
Here's a link to the evidence:
http://i35.photobucket.com/albums/d1.../hanknlucy.jpg
Don't mind the washbasket
Here's a link to the evidence:
http://i35.photobucket.com/albums/d1.../hanknlucy.jpg
Don't mind the washbasket