What about Norbert Davis's soft-boiled noir age detective whose partner is a great dane? Doans and Carstairs appeared in about four novels. See Manybooks and Mobileread.
Oh, Murderer Mine -
https://www.mobileread.com/forums/showthread.php?t=12473
The Mouse in the Mountain -
https://www.mobileread.com/forums/showthread.php?t=17928
Sally's in the Alley -
https://www.mobileread.com/forums/sho...=norbert+davis
Holocaust House -
https://www.mobileread.com/forums/sho...=norbert+davis
Great fun, too!