First family dog gotten by parents when I was age 7, Terrier mix, not a breed, Shepherd mix, another family dog gotten by parents, when I was 17, Corgi mix, I got when I moved out, from SPCA, then two GSD's, then numerous GSD's and/or GSD mixes, then a rescue JRT, and now my current to JRT's, which will be my last dogs, when they pass.
Too far back to recall what they were fed. My current dogs are being fed properly a nutritionally complete/balanced diet specifically formulated for dogs.
Mutts, mongrels, mixes aren't breeds.......
Why does it matter what dogs anyone has owned, how old anyone was, how they were gotten or what they were fed, etc. Curiosity? Curiosity killed the cat.