Mary at 52 Books has posted a list (author, title) of about 20 classic fiction and non-fiction dog stories, from Greyfriars Bobby by Eleanor Atkinson to Lad, a Dog by Albert Payson Terhune.
A few that aren’t on the list:
The Shaman Bulldog: A Love Story (1996) by Renaldo Fisher. One of my favourites, a book I’ve given to friends and family. “The life story of Faccia Bello, a seventy pound purebred English bulldog who gave love and understanding to the author in crises. An affectionate biography.”
Nop’s Trials (1984) by Donald McCaig: Stolen border collie tries to get home to his farm in Virginia as his owner searches frantically for him. Heartwarming adventure story.
Clara: The Early Years: The Story of the Pug Who Ruled my Life (1998) by Margo Kaufman: Humourous book about a small wrinkled dog with a pushed-in face and bat ears who thinks she’s a human of royal birth.