I am so sorry to hear about this. My wife and I have a female Boston Terrier named Zelda. We knew Cagney of Zack came from real knowledge of how Bostons behave. You captured him so well that Cagney will now be immortal. That does not lessen your loss. We readers thank you for your talent and for your puppy muse. We have Cagney clips all over the refrigerator and C keeps a folder of Cagney situations. Based on your Creation of Cagney the real Cagney was a great dog and just as much fun as Bostons really are. In your sadness, remember the blessings that you had.
This is true for me too, for all the toons. I am not happy about it.