Oh God, why are their beautiful lives so short -- they should live far beyond our years so we never experience the pain associated with someone who's only purpose was to love you ...
I wish you patience and healing one day! One of my favorite sentence is by Erica Jong:
"Dogs come into our lives to teach us about love and loyalty. They depart to teach us about loss. A new dog never replaces an old dog; it merely expands the heart."
I like your use of masks and doubled photos.