Gizmo blessed our lives for 17 years, he was our Giz, Gizzie, Gizzard, Muffin Man, Shmoo, Foaf. Gizmo was an adorable ornery pup, a sweet old guy (I swear just ask Nico and Lily), and a hell-raiser in between (as most people knew him). Much like his pa, Gizmo had a strong personality and was fiercely protective of his family.
One thing can be said if you met Giz he probably left a mark (literally). He will forever be in our hearts and memories.
May he be running free, something he often did in his sleep, on a sunny day in a cornfield.