Same with my boxer, Dixie. Best dog ever! Adopted her from a rescue shelter when she was 8. She finally succumbed to heart failure at 15, pretty old for a boxer.
Still miss her.
We only had ours a little over 3 years. She wound up with pancreatitis.
We now have a super crazy Mutt. No clue what she is but boy is she a handful. Lol